Agent for dyeing keratinuos fibres, containing pigments and c2-c30 alkyl methicones

ABSTRACT

Agents, processes, and kits-of-parts are provided for dyeing keratinous fibers are provided. An agent for dyeing keratinous fibers includes (a1) at least one C2-C30 alkyl methicone; and (a2) at least one pigment.

CROSS-REFERENCE TO RELATED APPLICATION

This application is a U.S. National-Stage entry under 35 U.S.C. § 371 based on International Application No. PCT/EP2021/063489, filed May 20, 2021, which was published under PCT Article 21(2) and which claims priority to German Application No. 102020207604.9, filed Jun. 19, 2020, which are all hereby incorporated in their entirety by reference.

TECHNICAL FIELD

The subject of the present application is an agent for coloring keratinous fibers, in particular human hair, which comprises at least one C₂-C₃₀ alkyl methicone (a1) and at least one pigment (a2).

A further subject of this application is a process for dyeing keratinous fibers, in particular human hair, wherein a ready-to-use dyeing composition is first prepared by mixing a predispersion of C₂-C₃₀ alkyl methicone (a1) and pigment (a2) with a water-comprising carrier formulation. This ready-to-use agent is applied to the keratin fibers, left to act, and rinsed out again.

BACKGROUND

Another subject of this application is a multicomponent packaging unit comprising, separately packaged in different containers, two agents (I) and (II), the first agent (I) being a predispersion of C₂-C₃₀ alkyl methicone (a1) and pigment (a2) and the second agent (II) being a water-comprising cosmetic carrier formulation.

Changing the shape and color of keratinous material, especially human hair, is a key area of modern cosmetics. To change the hair color, the expert knows various coloring systems depending on the coloring requirements. Oxidation dyes are usually used for permanent, intensive dyeing with good fastness properties and good grey coverage. Such colorants contain oxidation dye precursors, so-called developer components and coupler components, which, under the influence of oxidizing agents such as hydrogen peroxide, form the actual dyes among themselves. Oxidation dyes are exemplified by very long-lasting dyeing results.

When direct dyes are used, ready-made dyes diffuse from the colorant into the hair fiber. Compared to oxidative hair dyeing, the dyeing obtained with direct dyes have a shorter shelf life and quicker wash ability. Dyes with direct colorings usually remain on the hair for a period of between 5 and 20 washes.

The use of color pigments is known for short-term color changes on the hair and/or skin. Color pigments are understood to be insoluble, coloring substances. These are present undissolved in the dye formulation in the form of small particles and are only deposited from the outside on the hair fibers and/or the skin surface. Therefore, they can usually be removed again without residue by a few washes with detergents containing surfactants. Various products of this type are available on the market under the name hair mascara.

If the user wants particularly long-lasting dyeing, the use of oxidative dyes has so far been his/her only option. However, despite numerous optimization attempts, an unpleasant ammonia or amine odor cannot be completely avoided in oxidative hair dyeing. The hair damage still associated with the use of oxidative dyes also has a negative effect on the user's hair. A challenge that still exists is therefore the search for alternative, high-performance dyes, and dyeing processes. Recently, particular focus has been placed on pigment-based dyeing systems.

It was the task of the present disclosure to provide a coloring agent that enables pigments to be fixed to the hair in an extremely durable manner. When the agent is used in a dyeing process, particularly intensive dyeing results with a good leveling capacity and a particularly uniform color result should be achieved.

BRIEF SUMMARY

Agents, processes, and kits-of-parts are provided for dyeing keratinous fibers are provided. An agent for dyeing keratinous fibers includes (a1) at least one C2-C30 alkyl methicone; and (a2) at least one pigment.

A process for dyeing keratinous fibers is provided. The process includes providing a first agent (I), wherein the first agent (I) comprises: (a1) at least one C2-C30 alkyl methicone, and (a2) at least pigment; providing a second agent (II), wherein the second agent (II) is an aqueous cosmetic carrier formulation; preparing an application mixture by mixing the first and second agents (I) and (II); applying the application mixture to the keratinous material; and rinsing the application mixture from the keratinous material with water.

A process for dyeing keratinous fibers is provided. The process includes providing a first agent (I), wherein the first agent (I) comprises: (a1) at least one C2-C30 alkyl methicone, and (a2) at least pigment; providing a second agent (II), wherein the second agent (II) is an aqueous cosmetic carrier formulation; preparing an application mixture by mixing the first and second agents (I) and (II); applying the application mixture to the keratinous material; and rinsing the application mixture from the keratinous material with water.

A multicomponent packaging unit (kit-of-parts) for dyeing keratinous fibers is provided. The kit-of-parts includes a first container comprising a first agent (I), the first agent (I) comprising: (a1) at least one C₂-C₃₀ alkyl methicone, and (a2) at least pigment, and a second container comprising a second agent (II), wherein the second agent (II) is a water-containing cosmetic carrier formulation.

DETAILED DESCRIPTION

The following detailed description is merely exemplary in nature and is not intended to limit the disclosure or the application and uses of the subject matter as described herein. Furthermore, there is no intention to be bound by any theory presented in the preceding background or the following detailed description.

Surprisingly, it has now been found that the problem can be excellently solved if keratinous fibers, in particular hair, are dyed with an agent comprising at least one C₂-C₃₀ alkyl methicone (a1) and at least one pigment (a2).

A first object of the present disclosure is an agent for coloring keratinous material, in particular human hair, comprising.

(a1) at least one C₂-C₃₀ alkyl methicone, and (a2) at least one pigment.

In the course of the work leading to the present disclosure, it was found that particularly good color results could be obtained if the pigment or pigments were predispersed by mixing with at least one C₂-C₃₀ alkyl methicone. Without being committed to this theory, it is assumed that the C₂-C₃₀ alkyl methicones function as dispersants and form a film around the pigments. The pigments coated or coated in this way can then be distributed particularly well and evenly in the colorant and can therefore be dispersed particularly well. Thus, when these dyes were applied to hair strands, very uniform coloring results were obtained. It was shown that the C₂-C₃₀ alkyl methicones resulted in improved uniformity of the colorations compared to other dispersants.

Keratinous Fibers

Keratinous fibers include hair, wool, fur, and feathers. Preferably, keratinous fibers are understood to mean human hair.

Coloring Agent

The term “coloring agent” is used in the context of this present disclosure for a coloring of the keratin material, in particular the hair, caused using pigments. In this coloring process, the pigments are deposited as coloring compounds in a particularly homogeneous and uniform film on the surface of the keratin material.

As contemplated herein, the coloring agent represents an agent ready for use. This ready-to-use agent can, for example, be filled into a container and applied to the keratin material in this form without further dilution, mixing or other process steps. For reasons of storage stability, however, it has been found to be particularly preferable if the cosmetic agent ready for use is prepared by the hairdresser or user only shortly before application. To prepare the ready-to-use agent, for example, the mixture or predispersion of C₂-C₃₀ alkyl methicone (a1) and pigment (a2) can be made with one or more further agents. This or these further agents may be, for example, a water-based formulation such as a cream base or a gel base. This base formulation is then used to dilute the mixture or predispersion of C₂-C₃₀ alkyl methicone (a1) and pigment (a2). The mixing of C₂-C₃₀ alkyl methicone/pigment with the base formulation can be conducted, for example, by shaking and in this way ensures a very particularly uniform distribution of the dispersed pigments in the cream base or gel base.

Furthermore, it is also conceivable to mix three or more different agents in the preparation of the ready-to-use colorant, the first agent comprising C₂-C₃₀ alkyl methicone and pigment, another agent representing the base formulation described above, and a third agent comprising the ingredients which, for stability reasons, should be stored separately from both C₂-C₃₀ alkyl methicone/pigment and the mostly water-comprising base formulation. In this third agent, for example, amino functionalized silicone polymers may be very preferably included.

C₂-C₃₀ Alkyl Methicone (a1)

As the first ingredient (a1) essential to the present disclosure, the agent comprises at least one C₂-C₃₀ alkyl methicone.

As contemplated herein, a C₂-C₃₀ alkyl methicone is understood to be a dimethicone substituted with at least one C₂-C₃₀ alkyl group. Dimethicones are alternatively referred to in the literature as dimethylpolysiloxanes or polydimethylsiloxanes.

The following have proved to be particularly suitable for solving the problem as contemplated herein C₂-C₃₀ alkyl methicone (a1) of the formula (Si alkyl),

where R₁, R₂, R₃ independently of one another represent a C₁-C₃₀-alkyl group, a C₁-C₆-alkoxy group, a hydroxyl group, or a hydrogen atom, x stands for an integer from 0 to 1000, y stands for an integer from 0 to 1000, and z stands for an integer from 0 to 1000, provided that

-   -   at least one of the radicals from the group consisting of R₁, R₂         and R₃ is a C₂-C₃₀-alkyl group,         and     -   when R₂ is a C₂-C₃₀ alkyl group, y is at least 1.

In a very particularly preferred embodiment, an agent as contemplated herein comprises at least one C₂-C₃₀ alkyl methicone (a1) of the formula (Si alkyl),

where R₁, R₂, R₃ independently of one another represent a C₁-C₃₀-alkyl group, a C₁-C₆-alkoxy group, a hydroxyl group, or a hydrogen atom, x stands for an integer from 0 to 1000, y stands for an integer from 0 to 1000, and z stands for an integer from 0 to 1000, provided that

-   -   at least one of the radicals from the group consisting of R₁, R₂         and R₃ is a C₂-C₃₀-alkyl group,         and     -   when R₂ is a C₂-C₃₀ alkyl group, y is at least 1.

In the C₂-C₃₀ alkyl methicones (a1) of the formula (Si alkyl), the radicals R1, R2 and R3 independently of one another represent a C₁-C₃₀ alkyl group, a C₁-C₆ alkoxy group, a hydroxyl group, or a hydrogen atom.

The C₁-C₃₀ alkyl group can be linear or displayed, with displayed alkyl groups being possible from a chain length of at least 3 C atoms. As an example of a C1-C6 alkoxy group, the methoxy group and the ethoxy group can be mentioned.

Preferably, the radicals R1, R2 and R3 independently represent a linear C₁-C₃₀ alkyl group.

Examples of a linear C₁-C₃₀ alkyl group are the methyl group, the ethyl group, the n-propyl group, the n-butyl group, the n-pentyl group, the n-hexyl group, the n-heptyl group, the n-octyl group, the n-nonyl group, the n-decyl group, the n-undecyl group, the n-dodecyl group, the n-tridecyl group, the n-tetradecyl group, the n-pentadecyl group, the n-hexadecyl group, the n-heptadecyl group, the n-octadecyl group and the n-isosanyl group.

It has been found to be preferred if the radicals R₁ and R₃ located at the end groups of the methicone independently represent a C₁-C₃₀ alkyl group, preferably a C₁-C₂₀ alkyl group, more preferably a C₁-C₁₈ alkyl group. Very preferably, the radicals R₁ and R₃ both represent a methyl group.

In the case of C₂-C₃₀ alkyl methicones of the formula (Si alkyl), there is a requirement that at least one of the radicals from the group consisting of R₁, R₂ and R₃ represents a C₂-C₃₀ alkyl group. In this context, it is particularly preferred if the radicals R₁ and R₃ independently represent a C₁-C₃₀ alkyl group and the radical R2 represents a C₂-C₃₀ alkyl group.

Furthermore, it is preferred if the radical R₂ located in the middle part of the methicone stands for a C₂-C₃₀ alkyl group, further preferred for a C₂-C₁₈ alkyl group, and especially preferred for a C₆-C₁₀ alkyl group.

The index x stands for an integer from 0 to 1000. Preferably, x represents an integer from 0 to 100, more preferably, x represents an integer from 0 to 10, and most preferably, x represents the number 0.

The index y stands for an integer from 0 to 1000. Preferably, y represents an integer from 0 to 100, more preferably, y represents an integer from 0 to 10, and most preferably, y represents the number 1.

The index z stands for an integer from 0 to 1000. Preferably, z represents an integer from 0 to 100, more preferably, z represents an integer from 0 to 10, and most preferably, z represents the number 0.

When all three indices x, y and z are 0, the C₂-C₃₀ alkyl methicone of formula (Si alkyl) is a dimeric siloxane corresponding to formula (Si alkyl-2)

In the case of the compounds of the formula (Si alkyl-2), there is no grouping that could contain a radical R2, so in the case of the compounds of the formula (Si alkyl-2), there is the requirement that at least one of the radicals from the group consisting of R₁ and R₃ represents a C₂-C₃₀ alkyl group.

Very particularly uniform colorations were obtained when the agent as contemplated herein included at least one C₂-C₃₀ alkyl methicone (a1) of the formula (Si alkyl), wherein R₁ and R₃ are independently a C₁-C₃₀ alkyl group, preferably a methyl group, R₂ represents a C₂-C₃₀ alkyl group, preferably a C₂-C₁₈ alkyl group, particularly preferably a C₆-C₁₀ alkyl group,

x represents an integer from 0 to 10, preferably the number 0, y represents an integer from 1 to 10, preferably the number 1, and z represents an integer from 0 to 10, preferably the number 0.

In another very particularly preferred embodiment, an agent as contemplated herein comprises at least one C₂-C₃₀ alkyl methicone (a1) of the formula (Si alkyl), wherein

R₁ and R₃ is a C₁-C₃₀ alkyl group, preferably a methyl group, R₂ represents a C₂-C₃₀ alkyl group, preferably a C₂-C₁₈ alkyl group, particularly preferably a C₆-C₁₀ alkyl group, x represents an integer from 0 to 10, preferably the number 0, y represents an integer from 1 to 10, preferably the number 1, and z represents an integer from 0 to 10, preferably the number 0.

If the two indices x and z both stand for the number 0 and y stands for the number 1, the C₂-C₃₀-alkyl methicone of the formula (Si alkyl) is a trimeric siloxane corresponding to the formula (Si alkyl-3)

The use of C₂-C₃₀ alkyl methicones of the formula (Si alkyl-3) in the agent as contemplated herein is particularly preferred.

In another very particularly preferred embodiment, an agent as contemplated herein comprises at least one C₂-C₃₀-alkyl methicone (a1) of the formula (Si alkyl-3),

where R₁ and R₃ represent a C₁-C₃₀ alkyl group, preferably a methyl group, and R₂ is a C₂-C₃₀ alkyl group, preferably a C₂-C₁₈ alkyl group, particularly preferably a C₆-C₁₀ alkyl group.

Particularly uniform color results were obtained with certain representatives from the group of C₂-C₃₀ alkyl methicones (a1). It has therefore further been found to be particularly preferred if the agent as contemplated herein comprises at least one C₂-C₃₀ alkyl methicone (a1) selected from the group consisting of caprylyl methicone, cetearyl methicone, ethyl methicone, hexyl methicone, lauryl methicone, myristyl methicone and stearyl methicone, very preferably caprylyl methicone.

In another very particularly preferred embodiment, an agent as contemplated herein comprises at least one C₂-C₃₀-alkyl methicone (a1) selected from the group consisting of caprylylmethicone, cetearylmethicone, ethylmethicone, hexylmethicone, laurylmethicone, myristylmethicone and stearylmethicone, very preferably caprylylmethicone.

Caprylyl methicone may alternatively be referred to as 1,1,1,3,5,5,5-heptamethyl-3-octyltrisiloxane or caprylyl methicone and has the CAS number 17955-88-3. Caprylylmethicone, for example, can be purchased commercially under the trade name Dowsil FZ-3196 Fluid from Dow Corning. Caprylylmethicone is also commercially available under the trade names SilCare 41M10 and SilCare 41M15 from Clariant. Another supplier is Momentive, which sells caprylylmethicone under the trade name Silsoft 034.

To ensure particularly fine dispersion of the pigments (a2) in the agent of the present disclosure, the C₂-C₃₀ alkyl methicone(s) (a1) are preferably used in certain ranges of amounts. Thus, it has been found to be particularly advantageous if the agent comprises—based on its total weight—one or more C₂-C₃₀ alkyl methicones (a1) in a total amount of from 0.1 to 10.0 wt. %, preferably from 0.2 to 7.0 wt. %, more preferably from 0.4 to 5.0 wt. %, still more preferably from 0.5 to 3.0 wt. %, and most preferably from 0.5 to 2.0 wt. %.

In another particularly preferred embodiment, an agent as contemplated herein comprises—based on the total weight of the agent—one or more C₂-C₃₀ alkyl methicones (a1) in a total amount of from 0.1 to 10.0 wt. %, preferably from 0.2 to 7.0 wt. %, more preferably from 0.4 to 5.0 wt. %, still more preferably from 0.5 to 3.0 wt. % and very particularly preferably from 0.5 to 2.0 wt. %.

In another very particularly preferred embodiment, an agent as contemplated herein comprises—based on the total weight of the agent—from 0.1 to 10.0 wt. %, preferably from 0.2 to 7.0 wt. %, further preferably from 0.4 to 5.0 wt. %, still further preferably from 0.5 to 3.0 wt. % and very particularly preferably from 0.5 to 2.0 wt. % of caprylyl methicone.

Pigments (a2)

As a second essential component, the composition as contemplated herein comprises at least one pigment (a2).

For the purposes of the present disclosure, colorant compounds are substances capable of imparting a coloration to the keratin material. Particularly well-suited colorant compounds can be selected from the group of pigments, direct-acting dyes, photochromic dyes and thermochromic dyes.

An agent as contemplated herein comprises at least one colorant compound (a2) from the group of pigments.

Pigments within the meaning of the present disclosure are coloring compounds which have a solubility in water at 25° C. of less than 0.5 g/L, preferably less than 0.1 g/L, even more preferably less than 0.05 g/L. Water solubility can be determined, for example, by the method described below: 0.5 g of the pigment are weighed in a beaker. A beaker glass is added. Then one liter of distilled water is added. This mixture is heated to 25° C. for one hour while stirring on a magnetic stirrer. If undissolved components of the pigment are still visible in the mixture after this period, the solubility of the pigment is below 0.5 g/L. If the pigment-water mixture cannot be assessed visually due to the high intensity of the finely dispersed pigment, the mixture is filtered. If a proportion of undissolved pigments remains on the filter paper, the solubility of the pigment is below 0.5 g/L.

Suitable color pigments can be of inorganic and/or organic origin.

In a preferred embodiment, an agent as contemplated herein comprises at least one colorant compound (a2) from the group consisting of inorganic and/or organic pigments.

Preferred color pigments are selected from synthetic or natural inorganic pigments. Inorganic color pigments of natural origin can be produced, for example, from chalk, ochre, umber, green earth, burnt Terra di Siena or graphite. Furthermore, black pigments such as iron oxide black, colored pigments such as ultramarine or iron oxide red as well as fluorescent or phosphorescent pigments can be used as inorganic color pigments.

Particularly suitable are colored metal oxides, hydroxides and oxide hydrates, mixed-phase pigments, sulfur-comprising silicates, silicates, metal sulfides, complex metal cyanides, metal sulphates, chromates and/or molybdates. Preferred color pigments are black iron oxide (CI 77499), yellow iron oxide (CI 77492), red and brown iron oxide (CI 77491), manganese violet (CI 77742), ultramarine (sodium aluminum sulfo silicates, CI 77007, pigment blue 29), chromium oxide hydrate (CI77289), iron blue (ferric ferrocyanides, CI77510) and/or carmine (cochineal).

As contemplated herein, colored pearlescent pigments are also particularly preferred color pigments. These are usually mica- and/or mica-based and can be coated with one or more metal oxides. Mica belongs to the layer silicates. The most important representatives of these silicates are muscovite, phlogopite, paragonite, biotite, lepidolite and margarite. To produce the pearlescent pigments in combination with metal oxides, the mica, muscovite or phlogopite, is coated with a metal oxide.

As an alternative to natural mica, synthetic mica coated with one or more metal oxides can also be used as pearlescent pigment. Especially preferred pearlescent pigments are based on natural or synthetic mica (mica) and are coated with one or more of the metal oxides mentioned above. The color of the respective pigments can be varied by varying the layer thickness of the metal oxide(s).

In a further preferred embodiment, an agent as contemplated herein comprises at least one inorganic pigment (a2) which is preferably selected from the group of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and/or colored mica- or mica-based pigments coated with at least one metal oxide and/or a metal oxychloride.

In a further preferred embodiment, a composition as contemplated herein comprises at least one colorant compound (a2) from the group of pigments selected from mica- or mica-based pigments which are reacted with one or more metal oxides from the group consisting of titanium dioxide (CI 77891), black iron oxide (CI 77499), yellow iron oxide (CI 77492), red and/or brown iron oxide (CI 77491, CI 77499), manganese violet (CI 77742), ultramarine (sodium aluminum sulfosilicates, CI 77007, Pigment Blue 29), chromium oxide hydrate (CI 77289), chromium oxide (CI 77288) and/or iron blue (ferric ferrocyanide, CI 77510).

Examples of particularly suitable color pigments are commercially available under the trade names Rona®, Colorona®, Xirona®, Dichrona® and Timiron® from Merck, Ariabel® and Unipure® from Sensient, Prestige® from Eckart Cosmetic Colors and Sunshine® from Sunstar.

Particularly preferred color pigments with the trade name Colorona® are, for example:

Colorona Copper, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Passion Orange, Merck, Mica, CI 77491 (Iron Oxides), Alumina Colorona Patina Silver, Merck, MICA, CI 77499 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona RY, Merck, CI 77891 (TITANIUM DIOXIDE), MICA, CI 75470 (CARMINE) Colorona Oriental Beige, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Dark Blue, Merck, MICA, TITANIUM DIOXIDE, FERRIC FERROCYANIDE Colorona Chameleon, Merck, CI 77491 (IRON OXIDES), MICA Colorona Aborigine Amber, Merck, MICA, CI 77499 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona Blackstar Blue, Merck, CI 77499 (IRON OXIDES), MICA Colorona Patagonian Purple, Merck, MICA, CI 77491 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE), CI 77510 (FERRIC FERROCYANIDE) Colorona Red Brown, Merck, MICA, CI 77491 (IRON OXIDES), CI 77891 (TITANIUM DIOXIDE) Colorona Russet, Merck, CI 77491 (TITANIUM DIOXIDE), MICA, CI 77891 (IRON OXIDES) Colorona Imperial Red, Merck, MICA, TITANIUM DIOXIDE (CI 77891), D&C RED NO. 30 (CI 73360) Colorona Majestic Green, Merck, CI 77891 (TITANIUM DIOXIDE), MICA, CI 77288 (CHROMIUM OXIDE GREENS) Colorona Light Blue, Merck, MICA, TITANIUM DIOXIDE (CI 77891), FERRIC FERROCYANIDE (CI 77510) Colorona Red Gold, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Gold Plus MP 25, Merck, MICA, TITANIUM DIOXIDE (CI 77891), IRON OXIDES (CI 77491) Colorona Carmine Red, Merck, MICA, TITANIUM DIOXIDE, CARMINE Colorona Blackstar Green, Merck, MICA, CI 77499 (IRON OXIDES) Colorona Bordeaux, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Bronze, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Bronze Fine, Merck, MICA, CI 77491 (IRON OXIDES) Colorona Fine Gold MP 20, Merck, MICA, CI 77891 (TITANIUM DIOXIDE), CI 77491 (IRON OXIDES) Colorona Sienna Fine, Merck, CI 77491 (IRON OXIDES), MICA Colorona Sienna, Merck, MICA, CI 77491 (IRON OXIDES)

Colorona Precious Gold, Merck, Mica, CI 77891 (Titanium dioxide), Silica, CI 77491 (Iron oxides), Tin oxide

Colorona Sun Gold Sparkle MP 29, Merck, MICA, TITANIUM DIOXIDE, IRON OXIDES, MICA, CI 77891, CI 77491 (EU)

Colorona Mica Black, Merck, CI 77499 (Iron oxides), Mica, CI 77891 (Titanium dioxide) Colorona Bright Gold, Merck, Mica, CI 77891 (Titanium dioxide), CI 77491 (Iron oxides)

Colorona Blackstar Gold, Merck, MICA, CI 77499 (IRON OXIDES)

Other particularly preferred color pigments with the trade name Xirona® are for example:

Xirona Golden Sky, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide Xirona Caribbean Blue, Merck, Mica, CI 77891 (Titanium Dioxide), Silica, Tin Oxide Xirona Kiwi Rose, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide Xirona Magic Mauve, Merck, Silica, CI 77891 (Titanium Dioxide), Tin Oxide.

In addition, particularly preferred color pigments with the trade name Unipure® are for example:

Unipure Red LC 381 EM, Sensient CI 77491 (Iron Oxides), Silica Unipure Black LC 989 EM, Sensient, CI 77499 (Iron Oxides), Silica Unipure Yellow LC 182 EM, Sensient, CI 77492 (Iron Oxides), Silica

In a further embodiment, the agent as contemplated herein may also contain one or more colorant compounds (a2) from the group consisting of organic pigments

The organic pigments as contemplated herein are correspondingly insoluble, organic dyes or color lacquers, which may be selected, for example, from the group of nitroso, nitro-azo, xanthene, anthraquinone, isoindolinone, isoindolinone, quinacridone, perinone, perylene, diketo-pyrrolopyorrole, indigo, thioindido, dioxazine and/or triarylmethane compounds.

Examples of particularly suitable organic pigments are carmine, quinacridone, phthalocyanine, sorghum, blue pigments with the Color Index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments with the Color Index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with the Color Index numbers CI 61565, CI 61570, CI 74260, orange pigments with the Color Index numbers CI 11725, CI 15510, CI 45370, CI 71105, red pigments with the Color Index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and/or CI 75470.

In a further particularly preferred embodiment, an agent as contemplated herein comprises at least one organic pigment (a2) which is preferably selected from the group of carmine, quinacridone, phthalocyanine, sorghum, blue pigments having the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, CI 74160, yellow pigments having the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, CI 47005, green pigments with Color Index numbers CI 61565, CI 61570, CI 74260, orange pigments with Color Index numbers CI 11725, CI 15510, CI 45370, CI 71105, red pigments with Color Index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 and/or CI 75470.

The organic pigment can also be a color lacquer. As contemplated herein, the term color lacquer means particles comprising a layer of absorbed dyes, the unit of particle and dye being insoluble under the above-mentioned conditions. The particles can, for example, be inorganic substrates, which can be aluminum, silica, calcium borosilate, calcium aluminum borosilicate or even aluminum.

For example, alizarin color varnish can be used.

Due to their excellent light and temperature resistance, the use of the above-mentioned pigments in the agent as contemplated herein is particularly preferred. It is also preferred if the pigments used have a certain particle size. As contemplated herein, it is therefore advantageous if the at least one pigment has an average particle size D₅₀ of 1.0 to 50 μm, preferably 5.0 to 45 μm, preferably 10 to 40 μm, 14 to 30 μm. The average particle size D₅₀, for example, can be determined using dynamic light scattering (DLS).

The pigments (a2) represent the second essential of the agent as contemplated herein and are preferably used in the agent in certain ranges of amounts.

Particularly satisfactory results were obtained when the agent included—based on the total weight of the agent—one or more pigments (a2) in a total amount of 0.01 to 10.0 wt. %, preferably 0.1 to 5.0 wt. %, further preferably 0.2 to 2.5 wt. % and very preferably 0.25 to 1.5 wt. %.

In another very particularly preferred embodiment, an agent as contemplated herein is wherein the agent comprises—based on the total weight of the agent—one or more pigments (a2) in a total amount of from 0.01 to 10.0 wt. %, preferably from 0.1 to 5.0 wt. %, more preferably from 0.2 to 2.5 wt. % and very particularly preferably from 0.25 to 1.5 wt. %.

In another very particularly preferred embodiment, an agent as contemplated herein is wherein the agent comprises—based on the total weight of the agent—one or more inorganic pigments (a2) in a total amount of from 0.01 to 10.0% by weight, preferably from 0.1 to 5.0% by weight, more preferably from 0.2 to 2.5% by weight and very particularly preferably from 0.25 to 1.5% by weight.

In another very particularly preferred embodiment, an agent as contemplated herein is wherein the agent comprises—based on the total weight of the agent—one or more organic pigments (a2) in a total amount of from 0.01 to 10.0% by weight, preferably from 0.1 to 5.0% by weight, more preferably from 0.2 to 2.5% by weight and very particularly preferably from 0.25 to 1.5% by weight.

Amino-Functionalized Silicone Polymers (a3)

By using the combination of C₂-C₃₀ alkyl methicone (a1) and pigment (a2) in the agent, color results can be obtained that are exemplified by particularly high uniformity or particularly good leveling.

Depending on the purpose of the agent, the user may wish to have colorings in distinct color intensities. For nuancing hair, for example in pastel shades or inconspicuous natural shades, it may be sufficient to use only a mixture of (a1) and (a2) in the agent. In some cases, however, for example when particularly striking fashion shades are to be produced, it may be necessary to achieve the highest possible color intensity with the pigment-based colorant. For this purpose, it has proved particularly preferable to add at least one amino-functionalized silicone polymer (a3) to the agent as a further constituent. The amino-functionalized silicone polymer may alternatively be referred to as aminosilicone or amodimethicone.

Silicone polymers are macromolecules with a molecular weight of at least 500 g/mol, preferably at least 1000 g/mol, more preferably at least 2500 g/mol, particularly preferably at least 5000 g/mol, which comprise repeating organic units.

The maximum molecular weight of the silicone polymer depends on the degree of polymerization (number of polymerized monomers) and the batch size and is partly determined by the polymerization method. For the purposes of the present disclosure, it is preferred if the maximum molecular weight of the silicone polymer is not more than 10⁷ g/mol, preferably not more than 10⁶ g/mol, and particularly preferably not more than 105 g/mol.

The silicone polymers comprise many Si—O repeating units, and the Si atoms may carry organic radicals such as alkyl groups or substituted alkyl groups. Alternatively, a silicone polymer is therefore also referred to as polydimethylsiloxane.

Corresponding to the high molecular weight of silicone polymers, these are based on more than 10 Si—O repeat units, preferably more than 50 Si—O repeat units, and more preferably more than 100 Si—O repeat units, most preferably more than 500 Si—O repeat units.

An amino-functionalized silicone polymer is understood to be a functionalized silicone that carries at least one structural unit with an amino group. Preferably, the amino-functionalized silicone polymer carries multiple structural units, each having at least one amino group. An amino group is understood to mean a primary amino group, a secondary amino group, and a tertiary amino group. All these amino groups can be protonated in the acidic environment and are then present in their cationic form.

In principle, beneficial effects could be obtained with amino-functionalized silicone polymers (a3) if they carry at least one primary, at least one secondary and/or at least one tertiary amino group. However, colorations with the highest color intensities were observed when an amino-functionalized silicone polymer (a3) comprising at least one secondary amino group was used in the agent.

In a very particularly preferred embodiment, an agent as contemplated herein additionally comprises

(a3) comprises at least one amino-functionalized silicone polymer, preferably at least one amino-functionalized silicone polymer having at least one secondary amino group.

In other words, very particularly preferred is an agent for coloring keratinous material, in particular human hair, comprising

(a1) at least one C₂-C₃₀ alkyl methicone and (a2) at least one pigment and (a3) at least one amino-functionalized silicone polymer other than the C₂-C₃₀ alkyl methicones (a1).

The secondary amino group(s) may be located at various positions on the amino-functionalized silicone polymer. Particularly beneficial effects were found when an amino-functionalized silicone polymer (a3) was used that has at least one, preferably several, structural units of the formula (Si amino).

In the structural units of the formula (Si-Amino), the abbreviations ALK1 and ALK2 independently represent a linear or branched, divalent C₁-C₂₀ alkylene group.

In another very particularly preferred embodiment, an agent as contemplated herein is wherein the agent comprises at least one amino-functionalized silicone polymer (a3) comprising at least one structural unit of the formula (Si amino),

where ALK1 and ALK2 independently represent a linear or branched C₁-C₂₀ divalent alkylene group.

The positions marked with an asterisk (*) indicate the bond to further structural units of the silicone polymer. For example, the silicon atom adjacent to the star may be bonded to another oxygen atom, and the oxygen atom adjacent to the star may be bonded to another silicon atom or even to a C₁-C₆ alkyl group.

A bivalent C₁-C₂₀ alkylene group can alternatively be referred to as a divalent or divalent C₁-C₂₀ alkylene group, by which is meant that each ALK1 or AK2 grouping can form two bonds.

In the case of ALK1, one bond occurs from the silicon atom to the ALK1 grouping, and the second bond is between ALK1 and the secondary amino group.

In the case of ALK2, one bond is from the secondary amino group to the ALK2 grouping, and the second bond is between ALK2 and the primary amino group.

Examples of a linear bivalent C₁-C₂₀ alkylene group include the methylene group (—CH₂—), the ethylene group (—CH₂—CH₂—), the propylene group (—CH₂—CH₂—CH₂—), and the butylene group (—CH₂—CH₂—CH₂—CH₂—). The propylene group (—CH₂—CH₂—CH₂—) is particularly preferred. From a chain length of 3 C atoms, bivalent alkylene groups can also be branched. Examples of branched divalent, bivalent C₃-C₂₀ alkylene groups are (—CH₂—CH(CH₃)—) and (—CH₂—CH(CH₃)—CH₂—).

In another particularly preferred embodiment, the structural units of the formula (Si amino) represent repeat units in the amino-functionalized silicone polymer (a3), so that the silicone polymer comprises multiple structural units of the formula (Si amino).

Particularly well-suited amino-functionalized silicone polymers (a3) with at least one secondary amino group are listed below.

Colorations with the very highest color intensities could be obtained when an agent comprising at least one amino-functionalized silicone polymer (a3) comprising structural units of the formula (Si-I) and of the formula (Si-II) was applied to the keratinous material

In a further explicitly quite particularly preferred embodiment, an agent as contemplated herein comprises at least one amino-functionalized silicone polymer (a3) comprising structural units of the formula (Si-I) and of the formula (Si-II)

A corresponding amino functionalized silicone polymer with the structural units (Si-I) and (Si-II) is, for example, the commercial product DC 2-8566 or Dowsil 2-8566 Amino Fluid, which is commercially distributed by the Dow Chemical Company and bears the designation “Siloxanes and Silicones, 3-[(2-aminoethyl)amino]-2-methylpropyl Me, Di-Me-Siloxane” and the CAS number 106842-44-8.

In another preferred embodiment, an agent as contemplated herein comprises at least one amino-functional silicone polymer (a3) of the formula of the formula (Si-III),

where

-   -   m and n mean numbers chosen so that the sum (n+m) is in the         range 1 to 1000,     -   n is a number in the range 0 to 999 and m is a number in the         range 1 to 1000,     -   R1, R2 and R3, which are the same or different, denote a hydroxy         group or a C1-4 alkoxy group,     -   wherein at least one of R1 to R3 represents a hydroxy group.

Other compositions preferred as contemplated herein are exemplified by their content of at least one amino-functional silicone polymer (a3) of the formula of the formula (Si-IV),

located in the

-   -   p and q mean numbers chosen so that the sum (p+q) is in the         range 1 to 1000,     -   p is a number in the range 0 to 999 and q is a number in the         range 1 to 1000,     -   R1 and R2, which are different, denote a hydroxy group or a C1-4         alkoxy group, at least one of R1 to R2 denoting a hydroxy group.

The silicones of the formulas (Si-III) and (Si-IV) differ in the grouping at the Si atom, which carries the nitrogen-comprising group: In formula (Si-III), R2 represents a hydroxy group or a C1-4 alkoxy group, while the radical in formula (Si-IV) is a methyl group. The individual Si groupings, which are marked with the indices m and n or p and q, do not have to be present as blocks; rather, the individual units can also be present in a statistically distributed manner, i.e. in the formulas (Si-III) and (Si-IV), not every R1-Si(CH₃)₂ group is necessarily bonded to an —[O—Si(CH₃)₂] grouping.

Agents as contemplated herein which contain at least one amino-functional silicone polymer (a3) of the formula of the formula (Si-V) have also proved to be particularly effective with respect to the desired effects

located in the A represents a group —OH, —O—Si(CH₃)₃, —O—Si(CH₃)₂OH, —O—Si(CH₃)₂OCH₃, D represents a group —H, —Si(CH₃)₃, —Si(CH₃)₂OH, —Si(CH₃)₂OCH₃, b, n, and c stand for integers between 0 and 1000, with the specifications

-   -   n>0 and b+c>0     -   at least one of the conditions A=—OH or D=—H is fulfilled.

In the above formula (Si-V), the individual siloxane units are statistically distributed with the indices b, c, and n, i.e., they do not necessarily have to be block copolymers.

Agent (a) may further comprise one or more different amino-functionalized silicone polymers represented by the formula (Si-VI)

M(R_(a)Q_(b)SiO_((4-a-b)/2)x)(R_(c)SiO_((4-c)/2)y)M  (Si-VI)

in which formula above R is a hydrocarbon or a hydrocarbon radical having from 1 to about 6 carbon atoms, Q is a polar radical of the general formula —R¹HZ wherein R¹ is a divalent linking group bonded to hydrogen and the radical Z composed of carbon and hydrogen atoms, carbon, hydrogen and oxygen atoms, or carbon, hydrogen and nitrogen atoms, and Z is an organic amino functional radical comprising at least one amino functional group; “a” takes values ranging from about 0 to about 2, “b” takes values ranging from about 1 to about 3, “a”+“b” is less than or equal to 3, and “c” is a number ranging from about 1 to about 3, and x is a number ranging from 1 to about 2,000, preferably from about 3 to about 50 and most preferably from about 3 to about 25, and y is a number in the range of from about 20 to about 10,000, preferably from about 125 to about 10,000 and most preferably from about 150 to about 1,000, and M is a suitable silicone end group as known in the prior art, preferably trimethylsiloxy. Non-limiting examples of radicals represented by R include alkyl radicals, such as methyl, ethyl, propyl, isopropyl, isopropyl, butyl, isobutyl, amyl, isoamyl, hexyl, isohexyl and the like; alkenyl radicals, such as vinyl, halovinyl, alkylvinyl, allyl, haloallyl, alkylallyl; cycloalkyl radicals, such as cyclobutyl, cyclopentyl, cyclohexyl and the like; phenyl radicals, benzyl radicals, halohydrocarbon radicals, such as 3-chloropropyl, 4-bromobutyl, 3,3,3-trifluoropropyl, chlorocyclohexyl, bromophenyl, chlorophenyl and the like, and sulfur-comprising radicals, such as mercaptoethyl, mercaptopropyl, mercaptohexyl, mercaptophenyl and the like; preferably R is an alkyl radical comprising from 1 to about 6 carbon atoms, and most preferably R is methyl. Examples of R¹ include methylene, ethylene, propylene, hexamethylene, decamethylene, —CH₂CH(CH₃)CH₂—, phenylene, naphthylene, —CH₂CH₂SCH₂CH₂—, —CH₂CH₂OCH₂—, —OCH₂CH₂—, —OCH₂CH₂CH₂—, —CH₂CH(CH₃)C(O)OCH₂—, —(CH₂)₃CC(O)OCH₂CH₂—, —C₆H₄C₆H₄—, —C₆H₄CH₂C₆H₄—; and —(CH₂)₃C(O)SCH₂CH₂—.

Z is an organic amino functional radical comprising at least one amino functional group. One formula for Z is NH(CH₂)_(z)NH₂, where z is 1 or more. Another formula for Z is —NH(CH₂)_(z)(CH₂)_(zz)NH, wherein both z and zz are independently 1 or more, this structure comprising diamino ring structures, such as piperazinyl. Z is most preferably an —NHCH₂CH 2NH₂ radical. Another formula for Z is —N(CH₂)_(z)(CH₂)_(zz)NX₂ or —NX₂, wherein each X of X₂ is independently selected from the group of hydrogen and alkyl groups having 1 to 12 carbon atoms, and zz is 0.

Q is most preferably a polar, amine-functional radical of the formula —CH₂CH₂CH₂NHCH₂CH₂NH₂. In the formulas, “a” takes values ranging from about 0 to about 2, “b” takes values ranging from about 2 to about 3, “a”+“b” is less than or equal to 3, and “c” is a number ranging from about 1 to about 3. The molar ratio of R_(a)Q_(b)SiO_((4-a-b)/2) units to R_(c)SiO_((4-c)/2) units is in the range of about 1:2 to 1:65, preferably from about 1:5 to about 1:65 and most preferably by about 1:15 to about 1:20. If one or more silicones of the above formula are used, then the various variable substituents in the above formula may be different for the various silicone components present in the silicone mixture.

In another preferred embodiment, an agent as contemplated herein comprises at least one amino-functional silicone polymer of the formula (Si-VII),

R′_(a)G_(3-a)-Si(OSiG₂)_(n)-(OSiG_(b)R′_(2-b))_(m)—O-SiG_(3-a)-R′_(a)  (Si-VII),

wherein means:

-   -   G is —H, a phenyl group, —OH, —O—CH₃, —CH₃, —O—CH₂CH₃, —CH₂CH₃,         —O—CH₂CH₂CH₃, —CH₂CH₂CH₃, —O—CH(CH₃)₂, —CH(CH₃)₂,         —O—CH₂CH₂CH₂CH₃, —CH₂CH₂CH₂CH₃, —O—CH₂CH(CH₃)₂, —CH₂CH(CH₃)₂,         —O—CH(CH₃)CH₂CH₃, —CH(CH₃)CH₂CH₃, —O—C(CH₃)₃, —C(CH₃)₃;     -   a stands for a number between 0 and 3, especially 0.     -   b stands for a number between 0 and 1, especially 1,     -   m and n are numbers whose sum (m+n) is between 1 and 2000,         preferably between 50 and 150, where n preferably assumes values         from 0 to 1999 and from 49 to 149 and m preferably assumes         values from 1 to 2000, from 1 to 10,     -   R′ is a monovalent radical selected from         -   -Q-N(R″)—CH₂—CH₂—N(R″)₂         -   -Q-N(R″)₂         -   -Q-N⁺(R″)₃A⁻         -   -Q-N⁺H(R″)₂A⁻         -   -Q-N⁺H₂(R″)A⁻         -   -Q-N(R″)—CH₂—CH₂—N⁺R″H₂A®,             where each Q is a chemical bond, —CH₂—, —CH₂—CH₂—,             —CH₂CH₂CH₂—, —C(CH₃)₂—, —CH₂CH₂CH₂CH₂—, —CH₂C(CH₃)₂—,             —CH(CH₃)CH₂CH₂—,             R″ represents identical or different radicals selected from             the group of —H, -phenyl, -benzyl, —CH₂—CH(CH₃)Ph, the C₁₋₂₀             alkyl radicals, preferably —CH₃, —CH₂CH₃, —CH₂CH₂CH₃,             —CH(CH₃)₂, —CH₂CH₂CH₂H₃, —CH₂CH(CH₃)₂, —CH(CH₃)CH₂CH₃,             —C(CH₃)₃, and A represents an anion preferably selected from             chloride, bromide, iodide or methosulfate.

In the context of a further preferred embodiment, an agent as contemplated herein comprises at least one amino-functional silicone polymer (a3) of the formula (Si-VIIa),

wherein m and n are numbers whose sum (m+n) is between 1 and 2000, preferably between 50 and 150, n preferably assuming values from 0 to 1999 and from 49 to 149, and m preferably assuming values from 1 to 2000, from 1 to 10.

According to the INCI declaration, these silicones are called trimethylsilylamodimethicones.

In the context of a further preferred embodiment, an agent as contemplated herein comprises at least one amino-functional silicone polymer of the formula (Si-VIIb)

in which R represents —OH, —O—CH₃ or a —CH₃ group and m, n1 and n2 are numbers whose sum (m+n1+n2) is between 1 and 2000, preferably between 50 and 150, the sum (n1+n2) preferably assuming values from 0 to 1999 and in particular from 49 to 149 and m preferably assuming values from 1 to 2000, in particular from 1 to 10.

According to the INCI declaration, these amino-functionalized silicone polymers are called amodimethicones.

Regardless of which amino-functional silicones are used, agents as contemplated herein are preferred which contain an amino-functional silicone polymer (a3) whose amine number is above 0.25 meq/g, preferably above 0.3 meq/g and above 0.4 meq/g. The amine number represents the milliequivalents of amine per gram of the amino-functional silicone. It can be determined by titration and expressed in the unit mg KOH/g.

Furthermore, agents comprising a special 4-morpholinomethyl-substituted silicone polymer (a3) are also suitable. This amino-functionalized silicone polymer comprises structural units of the formulae (SI-VIII) and of the formula (Si-IX)

Corresponding 4-morpholinomethyl-substituted silicone polymers are described below.

A preferred amino-functionalized silicone polymer is known as.

Amodimethicone/Morpholinomethyl Silsesquioxane Copolymer is known and commercially available from Wacker in the form of the raw material Belsil ADM 8301 E.

As a 4-morpholinomethyl-substituted silicone, for example, a silicone can be used which has structural units of the formulae (Si-VIII), (Si-IX) and (Si-X)

in which R1 is —CH₃, —OH, —OCH₃, —O—CH₂CH₃, —O—CH₂CH₂CH₃, or —O—CH(CH₃)₂. R₂ is —CH₃, —OH, or —OCH₃.

Particularly preferred compositions as contemplated herein contain at least one 4-morpholinomethyl-substituted silicone of the formula (Si-XI)

located in the R1 is —CH₃, —OH, —OCH₃, —O—CH₂CH₃, —O—CH₂CH₂CH₃, or —O—CH(CH₃)₂. R₂ is —CH₃, —OH, or —OCH₃. B represents a group —OH, —O—Si(CH₃)₃, —O—Si(CH₃)₂OH, —O—Si(CH₃)₂OCH₃, D represents a group —H, —Si(CH₃)₃, —Si(CH₃)₂OH, —Si(CH₃)₂OCH₃, a, b, and c stand independently for integers between 0 and 1000, with the condition a+b+c>0 m and n independently of each other stand for integers between 1 and 1000

with the proviso that

-   -   at least one of the conditions B=—OH or D=—H is fulfilled,     -   the units a, b, c, m, and n are distributed statistically or         blockwise in the molecule.

Structural formula (Si-XI) is intended to illustrate that the siloxane groups n and m do not necessarily have to be directly bonded to a terminal grouping B or D, respectively. Rather, in preferred formulas (Si-VI) a>0 or b>0 and in particularly preferred formulas (Si-VI) a>0 and c>0, i.e., the terminal grouping B or D is preferably attached to a dimethylsiloxy grouping. Also, in formula (Si-VI), the siloxane units a, b, c, m, and n are preferably statistically distributed.

The silicones used as contemplated herein represented by formula (Si-VI) can be trimethylsilyl-terminated (D or B=—Si(CH₃)₃), but they can also be dimethylsilylhydroxy-terminated on two sides or dimethylsilylhydroxy-terminated and dimethylsilylmethoxy-terminated on one side. Silicones particularly preferred in the context of the present disclosure are selected from silicones in which

B=—O—Si(CH₃)₂OH and D=—Si(CH₃)₃ B=—O—Si(CH₃)₂OH and D=—Si(CH₃)₂OH B=—O—Si(CH₃)₂OH and D=—Si(CH₃)₂OCH₃ B=—O—Si(CH₃)₃ and D=—Si(CH₃)₂OH B=—O—Si(CH₃)₂OCH₃ and D=—Si(CH₃)₂OH. These silicones lead to exorbitant improvements in the hair properties of the hair treated with the agents of the present disclosure, and to a seriously improved protection in oxidative treatment.

It has been found to be particularly advantageous if the agent as contemplated herein comprises the amino-functionalized silicone polymer(s) (a3) in certain quantity ranges. Particularly satisfactory results were obtained when the agent included—based on the total weight of the agent—a total amount of 0.1 to 8.0 wt. %, preferably 0.2 to 5.0 wt. %, more preferably 0.3 to 3.0 wt. %, and most preferably 0.4 to 2.5 wt. %.

In another particularly preferred embodiment, an agent as contemplated herein comprises—based on the total weight of the agent—one or more amino-functionalized silicone polymers (a3) in a total amount of from 0.1 to 8.0 wt. %, preferably from 0.2 to 5.0 wt. %, more preferably from 0.3 to 3.0 wt. % and very particularly preferably from 0.4 to 2.5 wt. %.

Other Optional Components in the Agent

Depending on the desired form of packaging, the agent as contemplated herein may optionally also contain other components or ingredients.

Fat Components in Agent

If the agent is to be provided in the form of an emulsion or cream, the use of at least one fat constituent has proved particularly advantageous. The fatty components are hydrophobic substances that can form emulsions in the presence of water, forming micelle systems. Without being committed to this theory, it is assumed that the C₁-C₆ alkoxysilanes—either in the form of their monomers or in the form of their condensed oligomers—are embedded in this hydrophobic environment or in the micelle systems so that the polarity of their environment changes. Due to the hydrophobic character of the fatty components, the environment of the C₁-C₆ alkoxysilanes is also hydrophobised. It is assumed that the polymerization reaction of the C₁-C₆ alkoxy silanes leading to the film or coating takes place in an environment of reduced polarity at reduced speed.

For the purposes of the present disclosure, “fatty components” means organic compounds with a solubility in water at room temperature (22° C.) and atmospheric pressure (760 mmHg) of less than 1 wt. %, preferably less than 0.1 wt. %. The definition of fat constituents explicitly covers only uncharged (i.e., non-ionic) compounds. Fat components have at least one saturated or unsaturated alkyl group with at least 12 C atoms. The molecular weight of the fat constituents is a maximum of 5000 g/mol, preferably a maximum of 2500 g/mol and particularly preferably a maximum of 1000 g/mol. The fat components are neither polyoxyalkylated nor polyglycerylated compounds.

Very preferably, the additional fatty components used in the composition can be selected from the group of C₁₂-C₃₀ fatty alcohols, C₁₂-C₃₀ fatty acid triglycerides, C₁₂-C₃₀ fatty acid monoglycerides, C₁₂-C₃₀ fatty acid diglycerides and/or hydrocarbons.

In the context of a further preferred embodiment, an agent as contemplated herein comprises one or more fat constituents from the group consisting of the C₁₂-C₃₀ fatty alcohols, the C₁₂-C₃₀ fatty acid triglycerides, the C₁₂-C₃₀ fatty acid monoglycerides, the C₁₂-C₃₀ fatty acid diglycerides and/or the hydrocarbons.

In this context, very particularly preferred fat constituents are understood to be constituents from the group of C₁₂-C₃₀ fatty alcohols, C₁₂-C₃₀ fatty acid triglycerides, C₁₂-C₃₀ fatty acid monoglycerides, C₁₂-C₃₀ fatty acid diglycerides and/or hydrocarbons. For the purposes of the present disclosure, only non-ionic substances are explicitly regarded as fat components. Charged compounds such as fatty acids and their salts are not considered to be fat components.

The C₁₂-C₃₀ fatty alcohols can be saturated, mono- or polyunsaturated, linear, or branched fatty alcohols with 12 to 30 C atoms.

Examples of preferred linear, saturated C₁₂-C₃₀ fatty alcohols are dodecan-1-ol (dodecyl alcohol, lauryl alcohol), tetradecan-1-ol (tetradecyl alcohol, myristyl alcohol), hexadecan-1-ol (hexadecyl alcohol, Cetyl alcohol, palmityl alcohol), octadecan-1-ol (octadecyl alcohol, stearyl alcohol), arachyl alcohol (eicosan-1-ol), heneicosyl alcohol (heneicosan-1-ol) and/or behenyl alcohol (docosan-1-ol).

Preferred linear unsaturated fatty alcohols are (9Z)-octadec-9-en-1-ol (oleyl alcohol), (9E)-octadec-9-en-1-ol (elaidyl alcohol), (9Z,12Z)-octadeca-9,12-dien-1-ol (linoleyl alcohol), (9Z,12Z,15Z)-octadeca-9,12,15-trien-1-ol (linolenoyl alcohol), gadoleyl alcohol ((9Z)-eicos-9-en-1-ol), arachidone alcohol ((5Z,8Z,11Z,14Z)-eicosa-5,8,11,14-tetraen-1-ol), erucyl alcohol ((13Z)-docos-13-en-1-ol) and/or brassidyl alcohol ((13E)-docosen-1-ol).

The preferred representatives for branched fatty alcohols are 2-octyl-dodecanol, 2-hexyl-dodecanol and/or 2-butyl-dodecanol.

In a further preferred embodiment, an agent as contemplated herein comprises one or more C₁₂-C₃₀ fatty alcohols (a4) selected from the group consisting of

Dodecan-1-ol (dodecyl alcohol, lauryl alcohol), Tetradecan-1-ol (tetradecyl alcohol, myristyl alcohol), Hexadecan-1-ol (hexadecyl alcohol, cetyl alcohol, palmityl alcohol), Octadecan-1-ol (octadecyl alcohol, stearyl alcohol), Arachyl alcohol (eicosan-1-ol), Heneicosyl alcohol (heneicosan-1-ol), Behenyl alcohol (docosan-1-ol), (9Z)-Octadec-9-en-1-ol (oleyl alcohol), (9E)-Octadec-9-en-1-ol (elaidyl alcohol), (9Z,12Z)-Octadeca-9,12-dien-1-ol (linoleyl alcohol), (9Z,12Z,15Z)-Octadeca-9,12,15-trien-1-ol (linolenoyl alcohol), Gadoleyl alcohol ((9Z)-Eicos-9-en-1-ol), Arachidonic alcohol ((5Z,8Z,11Z,14Z)-Eicosa-5,8,11,14-tetraen-1-ol), Erucyl alcohol ((13Z)-docos-13-en-1-ol), Brassidyl alcohol ((13E)-docosen-1-ol),

2-Octyl-dodecanol,

2-hexyl dodecanol and/or 2-Butyl-dodecanol comprises.

It has been found to be quite preferable to use one or more C₁₂-C₃₀ fatty alcohols in quite specific ranges of amounts.

Furthermore, it is particularly preferred if the composition comprises one or more C₁₂-C₃₀ fatty alcohols in a total amount of from 2.0 to 50.0% by weight, preferably from 3.0 to 30.0% by weight, more preferably from 4.0 to 20.0% by weight, still more preferably from 5.0 to 15.0% by weight and most preferably from 5.0 to 10.0% by weight, based on the total weight of the composition.

Further, as a suitable fat ingredient, the agent may also contain at least one C₁₂-C₃₀ fatty acid triglyceride that is C₁₂-C₃₀ fatty acid monoglyceride and/or C₁₂-C₃₀ fatty acid diglyceride. For the purposes of the present disclosure, a C₁₂-C₃₀ fatty acid triglyceride is understood to be the triester of the trivalent alcohol glycerol with three equivalents of fatty acid. Both structurally identical and different fatty acids within a triglyceride molecule can be involved in the formation of esters.

As contemplated herein, fatty acids are to be understood as saturated or unsaturated, unbranched, or branched, unsubstituted or substituted C₁₂-C₃₀ carboxylic acids. Unsaturated fatty acids can be mono- or polyunsaturated. For an unsaturated fatty acid, its C—C double bond(s) may have the Cis or Trans configuration.

Fatty acid triglycerides are particularly suitable in which at least one of the ester groups is formed from glycerol with a fatty acid selected from dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), tetracosanoic acid (lignoceric acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), petroselinic acid [(Z)-6-octadecenoic acid], palmitoleic acid [(9Z)-hexadec-9-enoic acid], oleic acid [(9Z)-octadec-9-enoic acid], elaidic acid [(9E)-octadec-9-enoic acid], erucic acid [(13Z)-docos-13-enoic acid], linoleic acid [(9Z,12Z)-octadeca-9,12-dienoic acid, linolenic acid [(9Z,12Z,15Z)-octadeca-9,12,15-trienoic acid, eleostearic acid [(9Z,11E,13E)-octadeca-9,11,3-trienoic acid], arachidonic acid [(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoic acid], and/or nervonic acid [(15Z)-tetracos-15-enoic acid].

The fatty acid triglycerides can also be of natural origin. The fatty acid triglycerides or mixtures thereof occurring in soybean oil, peanut oil, olive oil, sunflower oil, macadamia nut oil, moringa oil, apricot kernel oil, marula oil and/or optionally hardened castor oil are particularly suitable for use in the product as contemplated herein.

A C₁₂-C₃₀ fatty acid monoglyceride is understood to be the monoester of the trivalent alcohol glycerol with one equivalent of fatty acid. Either the middle hydroxy group of glycerol or the terminal hydroxy group of glycerol may be esterified with the fatty acid.

C₁₂-C₃₀ fatty acid monoglycerides are particularly suitable in which a hydroxyl group of glycerol is esterified with a fatty acid, the fatty acids being selected from dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), tetracosanoic acid (lignoceric acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), petroselinic acid [(Z)-6-octadecenoic acid], palmitoleic acid [(9Z)-hexadec-9-enoic acid], oleic acid [(9Z)-octadec-9-enoic acid], elaidic acid [(9E)-octadec-9-enoic acid], erucic acid [(13Z)-docos-13-enoic acid], linoleic acid [(9Z,12Z)-octadeca-9,12-dienoic acid, linolenic acid [(9Z,12Z,15Z)-octadeca-9,12,15-trienoic acid, elaeostearic acid [(9Z,11E,13E)-octadeca-9,11,3-trienoic acid], arachidonic acid [(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoic acid], or nervonic acid [(15Z)-tetracos-15-enoic acid].

A C₁₂-C₃₀ fatty acid diglyceride is the diester of the trivalent alcohol glycerol with two equivalents of fatty acid. Either the middle and one terminal hydroxy group of glycerol may be esterified with two equivalents of fatty acid, or both terminal hydroxy groups of glycerol are esterified with one fatty acid each. The glycerol can be esterified with two structurally identical fatty acids or with two different fatty acids.

Fatty acid triglycerides are particularly suitable in which at least one of the ester groups is formed from glycerol with a fatty acid selected from dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), tetracosanoic acid (lignoceric acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), petroselinic acid [(Z)-6-octadecenoic acid], palmitoleic acid [(9Z)-hexadec-9-enoic acid], oleic acid [(9Z)-octadec-9-enoic acid], elaidic acid [(9E)-octadec-9-enoic acid], erucic acid [(13Z)-docos-13-enoic acid], linoleic acid [(9Z,12Z)-octadeca-9,12-dienoic acid, linolenic acid [(9Z,12Z,15Z)-octadeca-9,12,15-trienoic acid, elaeostearic acid [(9Z,11E,13E)-octadeca-9,11,3-trienoic acid], arachidonic acid [(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoic acid], and/or nervonic acid [(15Z)-tetracos-15-enoic acid].

Particularly good results were obtained when the composition included at least one C₁₂-C₃₀ fatty acid monoglyceride selected from the monoesters of glycerol with one equivalent of fatty acid selected from the group of dodecanoic acid (lauric acid), tetradecanoic acid (myristic acid), hexadecanoic acid (palmitic acid), tetracosanoic acid (lignoceric acid), octadecanoic acid (stearic acid), eicosanoic acid (arachidic acid), docosanoic acid (behenic acid), Petroselic acid [(Z)-6-octadecenoic acid], Palmitoleic acid [(9Z)-Hexadec-9-enoic acid], Oleic acid [(9Z)-Octadec-9-enoic acid], Elaidic acid [(9E)-Octadec-9-enoic acid], Erucic acid [(13Z)-Docos-13-enoic acid], Linoleic acid [(9Z,12Z)-Octadeca-9,12-dienoic acid, linolenic acid [(9Z,12Z,15Z)-octadeca-9,12,15-trienoic acid, elaeostearic acid [(9Z,11E,13E)-octadeca-9,11,3-trienoic acid], arachidonic acid [(5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoic acid] and/or nervonic acid [(15Z)-tetracos-15-enoic acid].

In the context of a further embodiment, an agent as contemplated herein comprises at least one C₁₂-C₃₀ fatty acid monoglyceride selected from the monoesters of glycerol with one equivalent of fatty acid from the group consisting of dodecanoic acid, tetradecanoic acid, hexadecanoic acid, tetracosanoic acid, octadecanoic acid, eicosanoic acid and/or docosanoic acid.

It has been shown to be preferable to use one or more C₁₂-C₃₀ fatty acid mono-, C₁₂-C₃₀ fatty acid di- and/or C₁₂-C₃₀ fatty acid triglycerides (a4) in specific ranges of amounts in the composition.

With regard to the solution of the problem as contemplated herein, it has proved advantageous if the composition—based on the total weight of the composition—included one or more C₁₂-C₃₀ fatty acid mono-, C₁₂-C₃₀ fatty acid di- and/or C₁₂-C₃₀ fatty acid triglycerides (a4) in a total amount of 0.1 to 20.0 wt. %, preferably from 0.3 to 15.0 wt. %, more preferably from 0.5 to 10.0 wt. % and most preferably from 0.8 to 5.0 wt. %.

In a very particularly preferred embodiment, a process as contemplated herein is wherein the composition comprises—based on the total weight of the composition—one or more C₁₂-C₃₀ fatty acid mono-, C₁₂-C₃₀ fatty acid di- and/or C₁₂-C₃₀ fatty acid triglycerides in a total amount of from 0.1 to 20.0 wt. %, preferably from 0.3 to 15.0 wt. %, more preferably from 0.5 to 10.0 wt. % and very particularly preferably from 0.8 to 5.0 wt. %.

The C₁₂-C₃₀ fatty acid mono-, C₁₂-C₃₀ fatty acid di- and/or C₁₂-C₃₀ fatty acid triglycerides may be used as the sole fat components (a4) in the compositions. However, it may also be suitable as contemplated herein to incorporate at least one C₁₂-C₃₀ fatty acid mono-, C₁₂-C₃₀ fatty acid di- and/or C₁₂-C₃₀ fatty acid triglyceride in combination with at least one C₁₂-C₃₀ fatty alcohol into the composition.

Furthermore, as a very particularly preferred fat constituent, the agents may also contain at least one hydrocarbon.

Hydrocarbons are compounds consisting exclusively of the atoms carbon and hydrogen with 8 to 80 C atoms. In this context, aliphatic hydrocarbons such as mineral oils, liquid paraffin oils (e.g., Paraffinium Liquidum or Paraffinum Perliquidum), isoparaffin oils, semi-solid paraffin oils, paraffin waxes, hard paraffin (Paraffinum Solidum), vaseline and polydecenes are particularly preferred.

Liquid paraffin oils (Paraffinum Liquidum and Paraffinium Perliquidum) have proven to be particularly suitable in this context. Paraffinum Liquidum, also known as white oil, is the preferred hydrocarbon. Paraffinum Liquidum is a mixture of purified, saturated, aliphatic hydrocarbons, consisting of hydrocarbon chains with a C-chain distribution of 25 to 35 C-atoms.

Particularly satisfactory results were obtained when the agent included at least one hydrocarbon selected from the group consisting of mineral oils, liquid kerosene oils, isoparaffin oils, semisolid kerosene oils, kerosene waxes, hard kerosene (paraffinum solidum), petrolatum and polydecenes.

In a very particularly preferred embodiment, an agent as contemplated herein comprises at least one fatty constituent from the group of hydrocarbons.

With regard to the solution of the problem as contemplated herein, it proved to be quite particularly preferable if the agent included—based on the total weight of the composition—one or more hydrocarbons in a total amount of from 0.5 to 20.0 wt. %, preferably from 0.7 to 10.0 wt. %, more preferably from 0.9 to 5.0 wt. % and very particularly preferably from 1.0 to 4.0 wt. %.

Water Content in Agent

The agent described above is a ready-to-use agent that can be applied to the keratinous material. This ready-to-use agent preferably has a high-water content. It has been found that particularly suitable agents are those comprising—based on the total weight of the agent—50.0 to 98.0 wt. %, preferably 60.0 to 90.0 wt. %, more preferably 70.0 to 90.0 wt. % and most preferably 75.0 to 90.0 wt. % of water.

In a further explicitly quite particularly preferred embodiment, an agent as contemplated herein comprises—based on the total weight of the agent—50.0 to 98.0 wt. %, preferably 60.0 to 90.0 wt. %, further preferably 70.0 to 90.0 wt. % and very particularly preferably 75.0 to 90.0 wt. % of water.

Surfactants in the Agent

Due to the optional but preferred content of water and fat constituent, the agent as contemplated herein is particularly preferably in the form of an emulsion. To further optimize the formation of the emulsion, it has proven particularly preferable to continue to use at least one surfactant in the agent.

Very preferably, therefore, the composition additionally comprises at least one surfactant.

In the context of a further particularly preferred embodiment, an agent as contemplated herein comprises at least one surfactant,

The term surfactants (T) refer to surface-active substances that can form adsorption layers on surfaces and interfaces or aggregate in bulk phases to form micelle colloids or lyotropic mesophases. A distinction is made between anionic surfactants consisting of a hydrophobic radical and a negatively charged hydrophilic head group, amphoteric surfactants, which carry both a negative and a compensating positive charge, cationic surfactants, which have a positively charged hydrophilic group in addition to a hydrophobic radical, and non-ionic surfactants, which have no charges but strong dipole moments and are strongly hydrated in aqueous solution.

In a very particularly preferred embodiment, an agent as contemplated herein comprises at least one non-ionic surfactant.

Non-ionic surfactants contain, for example, a polyol group, a polyalkylene glycol ether group or a combination of polyol and polyglycol ether group as the hydrophilic group. Such links include

-   -   Addition products of 2 to 50 mol ethylene oxide and/or 0 to 5         mol propylene oxide to linear and branched fatty alcohols with 6         to 30 C atoms, the fatty alcohol polyglycol ethers or the fatty         alcohol polypropylene glycol ethers or mixed fatty alcohol         polyethers,     -   Addition products of 2 to 50 mol ethylene oxide and/or 0 to 5         mol propylene oxide to linear and branched fatty acids with 6 to         30 C atoms, the fatty acid polyglycol ethers or the fatty acid         polypropylene glycol ethers or mixed fatty acid polyethers,     -   Addition products of 2 to 50 mol ethylene oxide and/or 0 to 5         mol propylene oxide to linear and branched alkylphenols having 8         to 15 C atoms in the alkyl group, the alkylphenol polyglycol         ethers or the alkylpolypropylene glycol ethers or mixed         alkylphenol polyethers,     -   with a methyl or C₂-C₆-alkyl radical end-group capped addition         products of 2 to 50 moles of ethylene oxide and/or 0 to 5 moles         of propylene oxide to linear and branched fatty alcohols with 8         to 30 C atoms, to fatty acids with 8 to 30 C atoms and to         alkylphenols with 8 to 15 C atoms in the alkyl group, such as         the grades available under the sales names Dehydol® LS, Dehydol®         LT (Cognis),     -   C₁₂-C₃₀ fatty acid mono- and diesters of addition products of 1         to 30 mol ethylene oxide to glycerol,     -   Addition products of 5 to 60 mol ethylene oxide to castor oil         and hardened castor oil,     -   Polyol fatty acid esters, such as the commercial product         Hydagen® HSP (Cognis) or Sovermol® grades (Cognis),     -   alkoxylated triglycerides,     -   alkoxylated fatty acid alkyl esters of the formula (Tnio-1)

R¹CO—(OCH₂CHR²)_(w)OR³  (Tnio-1)

in which R¹CO is a linear or branched, saturated and/or unsaturated acyl radical having 6 to 22 carbon atoms, R² is hydrogen or methyl, R³ is linear or branched alkyl radicals having 1 to 4 carbon atoms and w is numbers from 1 to 20,

-   -   amine oxides,     -   Hydroxy mixed ethers, as described for example in DE-OS         19738866,     -   Sorbitan fatty acid esters and addition products of ethylene         oxide to sorbitan fatty acid esters such as polysorbates,     -   Sugar fatty acid esters and addition products of ethylene oxide         to sugar fatty acid ester,     -   Addition products of ethylene oxide to fatty acid alkanolamides         and fatty amines,     -   Sugar tensides of the alkyl and alkenyl oligoglycoside type         according to formula (E4-II),

R⁴O-[G]_(p)  (Tnio-2)

in which R⁴ is an alkyl or alkenyl radical comprising 4 to 22 carbon atoms, G is a sugar residue comprising 5 or 6 carbon atoms and p is several 1 to 10. They can be obtained by the relevant methods of preparative organic chemistry. The alkyl and alkenyl oligoglycosides can be derived from aldoses or ketoses with 5 or 6 carbon atoms, preferably glucose. The preferred alkyl and/or alkenyl oligoglycosides are thus alkyl and/or alkenyl oligoglucosides. The index number p in the general formula (Tnio-2) indicates the degree of oligomerization (DP), i.e. the distribution of mono- and oligoglycosides and stands for a number between 1 and 10. While p must always be an integer in the individual molecule and can assume the values p=1 to 6, the value p for a certain alkyl oligoglycoside is an analytically determined arithmetical quantity, which usually represents a fractional number. Preferably alkyl and/or alkenyl oligoglycosides with an average degree of oligomerization p of 1.1 to 3.0 are used. From an application technology point of view, those alkyl and/or alkenyl oligoglycosides are preferred whose degree of oligomerization is less than 1.7 and lies between 1.2 and 1.4. The alkyl or alkenyl radical R⁴ can be derived from primary alcohols comprising 4 to 11, preferably 8 to 10 carbon atoms. Typical examples are butanol, caproic alcohol, caprylic alcohol, caprin alcohol and undecrylic alcohol as well as their technical mixtures, such as those obtained in the hydrogenation of technical fatty acid methyl esters or during the hydrogenation of aldehydes from Roelen's oxo synthesis. Preferred are alkyl oligoglucosides with a chain length of C₅-C₁₀ (DP=1 to 3), which are obtained as a preliminary step in the distillative separation of technical C₈-C₁₈ coconut-fatty alcohol and may be contaminated with less than 6 wt. % of C₁₂ alcohol, and alkyl oligoglucosides based on technical C_(9/11) oxoalcohols (DP=1 to 3). The alkyl or alkenyl radical R₁₅ can also be derived from primary alcohols having 12 to 22, preferably 12 to 14 carbon atoms. Typical examples are lauryl alcohol, myristyl alcohol, cetyl alcohol, palmoleyl alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol, brassidyl alcohol and their technical mixtures, which can be obtained as described above. Preferred are alkyl oligoglucosides based on hardened C_(12/14) coconut alcohol with a DP of 1 to 3.

-   -   Sugar surfactants of the fatty acid N-alkyl         polyhydroxyalkylamide type, a nonionic surfactant of formula         (Tnio-3)

R⁵CO—NR⁶—[Z]  (Tnio-3)

in which R⁵CO is an aliphatic acyl radical comprising 6 to 22 carbon atoms, R⁶ is hydrogen, an alkyl or hydroxyalkyl radical comprising 1 to 4 carbon atoms and [Z] is a linear or branched polyhydroxyalkyl radical comprising 3 to 12 carbon atoms and 3 to 10 hydroxyl groups. The fatty acid N-alkyl polyhydroxyalkylamides are known substances that can usually be obtained by reductive amination of a reducing sugar with ammonia, an alkylamine or an alkanolamine and subsequent acylation with a fatty acid, a fatty acid alkyl ester or a fatty acid chloride. The fatty acid N-alkyl polyhydroxyalkylamides are preferably derived from reducing sugars with 5 or 6 carbon atoms, especially from glucose. The preferred fatty acid N-alkyl polyhydroxyalkylamides are therefore fatty acid N-alkylglucamides as represented by the formula (Tnio-4):

R⁷CO—(NR⁸)—CH₂—[CH(OH)]₄—CH₂OH  (Tnio-4)

Preferably, glucamides of the formula (Tnio-4) are used as fatty acid-N-alkyl polyhydroxyalkylamides, in which R⁸ represents hydrogen or an alkyl group and R⁷CO represents the acyl radical of caproic acid, caprylic acid, capric acid, Lauric acid, myristic acid, palmitic acid, palmoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, linoleic acid, linolenic acid, arachidic acid, gadoleic acid, behenic acid or erucic acid or their technical mixtures. Particularly preferred are fatty acid N-alkyl glucamides of the formula (Tnio-4), which are obtained by reductive amination of glucose with methylamine and subsequent acylation with lauric acid or C12/14 coconut fatty acid or a corresponding derivative. Furthermore, polyhydroxyalkylamides can also be derived from maltose and palatinose.

The sugar surfactants may preferably be present in the agent used as contemplated herein in amounts of 0.1-20 wt. %, based on the total agent. Amounts of 0.5-15 wt. % are preferred and amounts of 0.5-7.5 wt. % are particularly preferred.

Other typical examples of non-ionic surfactants are fatty acid amide polyglycol ethers, fatty amine polyglycol ethers, mixed ethers or mixed formals, protein hydrolysates (especially wheat-based vegetable products) and polysorbates.

The alkylene oxide addition products to saturated linear fatty alcohols and fatty acids, each with 2 to 30 moles of ethylene oxide per mole of fatty alcohol or fatty acid, and the sugar surfactants have proved to be preferred non-ionic surfactants. Preparations with excellent properties are also obtained if they contain fatty acid esters of ethoxylated glycerol as non-ionic surfactants.

These connections are identified by the following parameters. The alkyl radical R comprises 6 to 22 carbon atoms and can be either linear or branched. Primary linear and in 2-position methyl-branched aliphatic radicals are preferred. Such alkyl radicals are for example 1-octyl, 1-decyl, 1-lauryl, 1-myristyl, 1-cytyl and 1-stearyl. Especially preferred are 1-octyl, 1-decyl, 1-lauryl, 1-myristyl. When so-called “oxo-alcohols” are used as starting materials, compounds with an odd number of carbon atoms in the alkyl chain predominate.

The compounds with alkyl groups used as surfactants can each be uniform substances. However, it is usually preferable to start from native plant or animal raw materials in the production of these substances, so that one obtains substance mixtures with different alkyl chain lengths depending on the respective raw material.

For surfactants which are products of the addition of ethylene and/or propylene oxide to fatty alcohols or derivatives of these addition products, both products with a “normal” homologue distribution and those with a narrowed homologue distribution can be used. By “normal” homologue distribution we mean mixtures of homologues obtained in the reaction of fatty alcohol and alkylene oxide using alkali metals, alkali metal hydroxides or alkali metal alcoholates as catalysts. Constricted homologue distributions are obtained, on the other hand, when, for example, hydrotalcites, alkaline earth metal salts of ether carboxylic acids, alkaline earth metal oxides, hydroxides or alcoholates are used as catalysts. The use of products with narrowed homologue distribution may be preferred.

Particularly satisfactory results were obtained when an agent (b) comprising at least one ethoxylated fatty alcohol with a degree of ethoxylation of 80 to 120 was used in the process as contemplated herein.

In another very particularly preferred embodiment, an agent as contemplated herein comprises at least one nonionic surfactant of the formula (T-I),

wherein Ra represents a saturated or unsaturated, straight, or branched C₅-C₂₄ alkyl group, preferably a saturated, straight C₁₆- bis C₁₈ alkyl group, and n is an integer from 80 to 120, preferably an integer from 90 to 110, and particularly preferably the number 100.

A particularly well-suited nonionic surfactant of this type bears the trade name Brij S 100 or Brij S 100 PA SG. This is stearyl alcohol, ethoxylated with 100 EO, which is commercially available from Croda and has the CAS number 9005-00-9.

Furthermore, particularly satisfactory results were obtained when an agent as contemplated herein was used which included at least one ethoxylated fatty alcohol with a degree of ethoxylation of 10 to 40.

In another very particularly preferred embodiment, an agent as contemplated herein comprises at least one nonionic surfactant of the formula (T-II),

wherein Ra is a saturated or unsaturated, unbranched, or branched C₅-C₂₄ alkyl group, preferably a saturated, unbranched C₁₆- to C₁₈ alkyl group, and m an integer from 10 to 40, preferably an integer from 20 to 35, and particularly preferably the number 30.

A particularly well-suited non-ionic surfactant of this type is ceteareth-30. Ceteareth-30 is a mixture of cetyl alcohol and stearyl alcohol, each ethoxylated with 30 units of ethylene oxide. The mixture of cetyl alcohol and stearyl alcohol is called cetearyl alcohol. Ceteareth-30 has the CAS number 68439-49-6 and can be purchased, for example, under the trade name Eumulgin B3 from BASF.

It has been found to be quite preferred if the composition comprises both at least one non-ionic surfactant of formula (T-I) and at least one non-ionic surfactant of formula (T-II).

Medium Solvent

The use of solvents has continued to produce particularly satisfactory results. For this reason, the composition as contemplated herein may additionally contain at least one solvent as an optional component.

Suitable solvents may include, for example, solvents selected from the group of 1,2 propylene glycol, 1,3-propylene glycol, ethylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerol, phenoxyethanol and benzyl alcohol. The use of 1,2-propylene glycol is particularly preferred.

In another very particularly preferred embodiment, a composition as contemplated herein comprises at least one solvent selected from the group of 1,2-propylene glycol, 1,3-propylene glycol, ethylene glycol, 1,2-butylene glycol, dipropylene glycol, ethanol, isopropanol, diethylene glycol monoethyl ether, glycerol, phenoxyethanol and benzyl alcohol, very preferably 1,2-propylene glycol.

1,2-Propylene glycol is alternatively referred to as 1,2-propanediol and bears the CAS numbers 57-55-6 [(RS)-1,2-dihydroxypropane], 4254-14-2 [(R)-1,2-dihydroxypropane] and 4254-153 [(S)-1,2-dihydroxypropane]. Ethylene glycol is alternatively known as 1,2-ethanediol and carries CAS number 107-21-1. Glycerol is alternatively known as 1,2,3-propanetriol and carries CAS number 56-81-5. Phenoxyethanol has the Cas number 122-99-6.

All the solvents described previously are commercially available from various chemical suppliers, such as Aldrich or Fluka.

By using the above-mentioned solvents in suitable application quantities, a particularly stable agent can be obtained, with which color results of remarkably high intensity can be obtained on the keratinous material.

In a further preferred embodiment, an agent as contemplated herein comprises—based on the total weight of the agent—one or more solvents in a total amount of 1.0 to 20.0% by weight, preferably 2.0 to 15.0% by weight, more preferably 3.0 to 15.0% by weight and very particularly preferably 4.0 to 10.0% by weight of 1,2-propylene glycol.

In another very particularly preferred embodiment, a composition as contemplated herein comprises—based on the total weight of the composition—1.0 to 95.0% by weight, preferably 2.0 to 15.0% by weight, more preferably 3.0 to 15.0% by weight and very particularly preferably 4.0 to 10.0% by weight of 1,2-propylene glycol.

Polymers in the Agent

The agent as contemplated herein may additionally comprise at least one film-forming polymer. The film-forming polymer may be selected, for example, from the group consisting of polyvinylpyrrolidone (PVP), vinylpyrrolidone/vinyl acetate copolymers, vinylpyrrolidone/styrene copolymers, vinylpyrrolidone/ethylene copolymers, vinylpyrrolidone/propylene copolymers, vinylpyrrolidone/vinylcaprolactam copolymers, vinylpyrrolidone/vinylformamide copolymers and/or vinylpyrrolidone/vinyl alcohol copolymers, explicitly very particularly preferred polyvinylpyrrolidone (PVP).

Further suitable film-forming polymers can be selected from the group of copolymers of acrylic acid, copolymers of methacrylic acid, homopolymers or copolymers of acrylic acid esters, homopolymers or copolymers of methacrylic acid esters, homopolymers or copolymers of acrylic acid amides, homopolymers or copolymers of methacrylic acid amides, copolymers of vinylpyrrolidone, copolymers of vinyl alcohol, copolymers of vinyl acetate, homopolymers or copolymers of ethylene, homopolymers or copolymers of propylene, homopolymers or copolymers of styrene, polyurethanes, polyesters and/or polyamides.

Film-forming polymers selected from the group of synthetic polymers, polymers obtainable by free-radical polymerization, or natural polymers have proven to be well suited.

Other particularly well-suited film-forming polymers can be selected from the homopolymers or copolymers of olefins, such as cycloolefins, butadiene, isoprene or styrene, vinyl ethers, vinyl amides, the esters, or amides of (meth)acrylic acid having at least one C₁-C₂₀ alkyl group, an aryl group or a C₂-C₁₀ hydroxyalkyl group.

Other film-forming polymers may be selected from the homo- or copolymers of isooctyl (meth)acrylate; isononyl (meth)acrylate; 2-ethylhexyl (meth)acrylate; lauryl (meth)acrylate); isopentyl (meth)acrylate; n-butyl (meth)acrylate); isobutyl (meth)acrylate; ethyl (meth)acrylate; methyl (meth)acrylate; tert-butyl (meth)acrylate; stearyl (meth)acrylate; hydroxyethyl (meth)acrylate; 2-hydroxypropyl (meth)acrylate; 3-hydroxypropyl (meth)acrylate; and/or mixtures thereof.

Further film-forming polymers may be selected from the homo- or copolymers of (meth)acrylamide; N-alkyl-(meth)acrylamides, in those with C2-C18 alkyl groups, such as N-ethyl-acrylamide, N-tert-butyl-acrylamide, le N-octyl-crylamide; N-di(C1-C4)alkyl-(meth)acrylamide.

Other suitable anionic copolymers include copolymers of acrylic acid, methacrylic acid or their C₁-C₆ alkyl esters, as sold under the INCI declaration Acrylates Copolymers. A suitable commercial product is for example Aculyn® 33 from Rohm & Haas. Copolymers of acrylic acid, methacrylic acid or their C₁-C₆ alkyl esters and the esters of an ethylenically unsaturated acid and an alkoxylated fatty alcohol are also preferred. Suitable ethylenically unsaturated acids are especially acrylic acid, methacrylic acid and itaconic acid; suitable alkoxylated fatty alcohols are especially steareth-20 or ceteth-20.

Polymers on the market include Aculyn® 22 (Acrylate/Steareth-20 Methacrylate Copolymer), Aculyn® 28 (Acrylate/Beheneth-25 Methacrylate Copolymer), Structure 2001@(Acrylates/Steareth-20 Itaconate Copolymer), Structure 3001@ (Acrylate/Ceteth-20 Itaconate Copolymer), Structure Plus® (acrylate/aminoacrylate C10-30 alkyl PEG-20 itaconate copolymer), Carbopol® 1342, 1382, Ultrez 20, Ultrez 21 (acrylate/C10-30 alkyl acrylate crosspolymer), Synthalen W 2000® (acrylate/palmeth-25 acrylate copolymer) or Soltex OPT (acrylate/C12-22 alkyl methacrylate copolymer) distributed by Rohme und Haas.

The homo- and copolymers of N-vinylpyrrolidone, vinylcaprolactam, vinyl-(C1-C6)alkyl-pyrrole, vinyl-oxazole, vinyl-thiazole, vinylpyrimidine, vinylimidazole can be named as suitable polymers based on vinyl monomers.

Also suitable are the copolymers octylacrylamide/acrylates/butylaminoethyl methacrylate copolymer, such as those sold commercially under the trade names AMPHOMER® or LOVOCRYL® 47 from NATIONAL STARCH, or the copolymers of acrylates/octylacrylamides sold under the trade names DERMACRYL® LT and DERMACRYL® 79 from NATIONAL STARCH.

Suitable olefin-based polymers include homopolymers and copolymers of ethylene, propylene, butene, isoprene and butadiene.

In another embodiment, the film-forming hydrophobic polymers may be the block copolymers comprising at least one block of styrene or the derivatives of styrene. These block copolymers can be copolymers that contain one or more other blocks in addition to a styrene block, such as styrene/ethylene, styrene/ethylene/butylene, styrene/butylene, styrene/isoprene, styrene/butadiene. Such polymers are commercially distributed by BASF under the trade name “Luvitol HSB”.

The agents may also contain other active ingredients, auxiliaries and additives, such as solvents, structurants such as glucose, maleic acid and lactic acid, hair-conditioning compounds such as phospholipids, for example lecithin and cephalins; perfume oils, dimethyl isosorbide and cyclodextrins; fiber structure-improving active ingredients, in particular mono-, di- and oligosaccharides such as glucose, galactose, fructose, fructose and lactose; dyes for coloring the product; anti-dandruff active ingredients such as piroctone olamine, zinc omadine and climbazole; amino acids and oligopeptides; protein hydrolysates on an animal and/or vegetable basis, as well as in the form of their fatty acid condensation products or optionally anionically or cationically modified derivatives; vegetable oils; light stabilizers and UV blockers; active ingredients such as panthenol, pantothenic acid, pantolactone, allantoin, pyrrolidinonecarboxylic acids and their salts, and bisabolol; polyphenols, in particular hydroxycinnamic acids, 6,7-dihydroxycoumarins, hydroxybenzoic acids, catechins, tannins, leucoanthocyanidins, anthocyanidins, flavanones, flavones and flavonols; Ceramides or pseudoceramides; vitamins, provitamins and vitamin precursors; plant extracts; fats and waxes such as fatty alcohols, beeswax, montan wax and kerosene; Swelling and penetrating agents such as glycerol, propylene glycol monoethyl ether, carbonates, hydrogen carbonates, guanidines, ureas and primary, secondary and tertiary phosphates; opacifiers such as latex, styrene/PVP and styrene/acrylamide copolymers; pearlescent agents such as ethylene glycol mono- and distearate as well as PEG-3-distearate; and blowing agents such as propane-butane mixtures, N₂O, dimethyl ether, CO₂ and air.

The specialist will make the selection of these other substances according to the desired properties of the agents. Regarding other optional components and the quantities of these components used, explicit reference is made to the relevant manuals known to the specialist. The additional active ingredients and auxiliary substances are preferably used in the preparations as contemplated herein in quantities of 0.0001 to 25 wt. % each, 0.0005 to 15 wt. %, based on the total weight of the respective agent.

Agent pH Value

The pH value of the agent as contemplated herein is preferably adjusted to a slightly acidic to alkaline pH value. Most preferably, the agent has an alkaline pH in the range of 4.0 to 11.5 preferably from 5.0 to 11.0.

To adjust the desired pH, the agent (a) and/or (b) may contain at least one alkalizing agent. The pH values for the purposes of the present disclosure are pH values measured at a temperature of 22° C.

As alkalizing agents, the agents may contain, for example, ammonia, alkanolamines and/or basic amino acids.

The alkanolamines which can be used in the agent of the present disclosure are preferably selected from primary amines having a C₂-C₆ alkyl base which carries at least one hydroxyl group. Preferred alkanolamines are selected from the group formed by 2-aminoethan-1-ol (monoethanolamine), 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropan-1,2-diol, 2-amino-2-methylpropan-1,3-diol.

Alkanolamines particularly preferred as contemplated herein are selected from 2-aminoethan-1-ol and/or 2-amino-2-methylpropan-1-ol. A particularly preferred embodiment is therefore wherein the agent as contemplated herein comprises an alkanolamine selected from 2-aminoethan-1-ol and/or 2-amino-2-methylpropan-1-ol as alkalizing agent.

For the purposes of the present disclosure, an amino acid is an organic compound comprising at least one protonatable amino group and at least one —COOH or —SO₃H group in its structure. Preferred amino acids are amino carboxylic acids, especially α-(alpha)-amino carboxylic acids and ω-amino carboxylic acids, whereby α-amino carboxylic acids are particularly preferred.

As contemplated herein, basic amino acids are those amino acids which have an isoelectric point pI of greater than 7.0.

Basic α-amino carboxylic acids contain at least one asymmetric carbon atom. In the context of the present disclosure, both enantiomers can be used equally as specific compounds or their mixtures, especially as racemates. However, it is particularly advantageous to use the naturally preferred isomeric form, usually in L-configuration.

The basic amino acids are preferably selected from the group formed by arginine, lysine, ornithine, and histidine, especially preferably arginine and lysine. In another particularly preferred embodiment, an agent as contemplated herein is therefore wherein the alkalizing agent is a basic amino acid from the group arginine, lysine, ornithine and/or histidine.

In addition, the product may contain other alkalizing agents, especially inorganic alkalizing agents. Inorganic alkalizing agents usable as contemplated herein are preferably selected from the group formed by sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium phosphate, potassium phosphate, sodium silicate, sodium metasilicate, potassium silicate, sodium carbonate and potassium carbonate.

Particularly preferred alkalizing agents are ammonia, 2-aminoethan-1-ol (monoethanolamine), 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-Amino-2-methylpropan-2-ol, 3-aminopropan-1,2-diol, 2-amino-2-methylpropan-1,3-diol, arginine, lysine, ornithine, histidine, sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium phosphate, potassium phosphate, sodium silicate, sodium metasilicate, potassium silicate, sodium carbonate and potassium carbonate.

In another very particularly preferred embodiment, a process as contemplated herein is wherein the colorant (a) comprises at least one alkalizing agent selected from the group of ammonia, 2-aminoethan-1-ol (monoethanolamine), 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropane-1,2-diol, 2-amino-2-methylpropane-1,3-diol, arginine, lysine, omithine, histidine, sodium hydroxide, potassium hydroxide, calcium hydroxide, barium hydroxide, sodium phosphate, potassium phosphate, sodium silicate, sodium metasilicate, potassium silicate, sodium carbonate and potassium carbonate.

To adjust the desired pH, the agent as contemplated herein may also contain at least one buffer system comprising at least one inorganic or organic acid and at least one salt of this acid.

A particularly well-suited inorganic acid is potassium dihydrogen phosphate. Potassium dihydrogen phosphate has the molecular formula KH₂PO₄ and carries the CAS number 7778-77-0. Potassium dihydrogen phosphate has a molar mass of 136.09 g/mol. It is highly soluble in water (222 g/l at 20° C.) and reacts acidically in water. A 5% solution of potassium dihydrogen phosphate in water has a pH value of 4.4.

Another particularly suitable inorganic acid (b2-I) is sodium dihydrogen phosphate. Sodium dihydrogen phosphate has the molecular formula NaH₂PO₄ and carries the CAS numbers 7558-80-7 (anhydrate), 10049-21-5 (monohdate) and 13472-35-0 (dihydrate). The anhydrous sodium dihydrogen phosphate has a molar mass of 119.98 g/mol. Sodium dihydrogen phosphate reacts acidically in aqueous solution.

Particularly preferred as a corresponding salt of the above two acids is dipotassium hydrogen phosphate. Dipotassium hydrogen phosphate has the molecular formula K₂HPO₄ and carries the CAS numbers 7758-11-4 (anhydrous) and 16788-57-1 (trihydrate). The anhydrous dipotassium hydrogen phosphate has a molar mass of 174.18 g/mol. Dipotassium hydrogen phosphate reacts alkaline in aqueous solution.

Also particularly preferred as a corresponding salt of the above two acids (b2-II) is disodium hydrogen phosphate. Disodium hydrogen phosphate has the molecular formula Na₂HPO₄ and carries the CAS numbers 7558-79-4 (anhydrous), 10028-24-7 (dihydrate), 7782-85-6 (heptahydrate) and 10039-32-4 (dodecahydrate). Anhydrous disodium hydrogen phosphate has a molar mass of 141.96 g/mol. Disodium hydrogen phosphate reacts alkaline in aqueous solution.

Process for Dyeing Keratin Material

The agents described above can be excellently used in processes for dyeing keratinous material, especially human hair.

A second object of the present disclosure is therefore a process for dyeing keratinous fibers, in particular human hair, in which an agent, as disclosed in detail in the description of the first object of the present disclosure, is applied to the keratinous fibers and, if necessary, rinsed out again after an exposure time of 30 seconds to 45 minutes.

In other words, a second object of the present disclosure is a process for coloring keratinous material, in particular human hair, comprising the following steps:

(1) Application of a coloring agent to the keratinous material, wherein the coloring agent is an agent as disclosed in detail in the description of the first subject matter of the present disclosure, (2) Exposure of the colorant to the keratinous material and (3) Rinse out the dye with water.

In step (1) of the process as contemplated herein, the agent of the first present disclosure is applied to the keratinous material, which is most preferably human hair.

In step (2) of the process as contemplated herein, the agent is then allowed to act on the keratinous material after its application. In this context, different exposure times of, for example, 30 seconds to 60 minutes are conceivable.

However, a major advantage of the dyeing system as contemplated herein is that an intensive color result can be achieved even in short periods after short exposure times. For this reason, it is advantageous if the application mixture remains on the keratin material only for comparatively short periods of time after its application, from 30 seconds to 15 minutes, preferably from 30 seconds to 10 minutes, and particularly preferably from 1 to 5 minutes.

In a further preferred embodiment, a method as contemplated herein is.

exemplified by: (2) Exposure of the colorant to the keratinous material for a period ranging from 30 seconds to 15 minutes, preferably from 30 seconds to 10 minutes, and most preferably from 1 to 5 minutes.

Finally, following the action of the application mixture on the keratin material, it is rinsed with water in step (3) of the process.

Here, in one embodiment, the application mixture can be washed out with water only, i.e., without the aid of an after-treatment agent or a shampoo. The use of a post-treatment agent or conditioner in step (6) is also conceivable in principle.

However, to solve the task as contemplated herein and to increase the convenience of use, it has proved particularly preferable to rinse the agent in step (3) exclusively with water without the aid of a further after-treatment agent, shampoo, or conditioner.

In a further preferred embodiment, a method as contemplated herein is.

exemplified by: (3) Rinse out the dye with water only. Process for Dyeing Keratin Material, in which the Agent Ready for Use is First Prepared.

As previously described, the agent of the first subject present disclosure is an application-ready agent that is either provided directly to the user in its application-ready form or is prepared by mixing various agents just prior to application.

To ensure a particularly fine distribution of the pigments, it has proved particularly preferable to prepare the ready-to-use agent shortly before application by mixing two or three different agents.

Accordingly, in a particularly preferred embodiment, the ready-to-use agent is prepared by mixing at least two different agents, the first of these two agents comprising the mixture of C₂-C₃₀ alkyl methicone(s) (a1) and pigment(s) (a2). The second agent represents a water-comprising cosmetic carrier formulation, which may additionally contain one or more of the optional ingredients as disclosed in the description of the first subject present disclosure. For example, the carrier formulation may contain at least one fatty component and/or at least one surfactant and/or at least one amino-functionalized silicone polymer (a3).

Thus, a further subject of the present application is a process for dyeing keratinous fibers, in particular human hair, comprising the following steps:

(1) Providing an agent (I), wherein the agent (I) comprises:

(a1) at least one C₂-C₃₀ alkyl methicone and

(a2) at least pigment,

(2) Providing an agent (II), wherein the agent (II) is an aqueous cosmetic carrier formulation, (3) Prepare an application mixture by mixing agents (I) and (II), (4) Apply the application mixture prepared in step (3) to the keratinous material, (5) exposure of the application mixture applied in step (4) to the keratinous material; and (6) Rinse the application mixture with water, wherein the ingredients (a1) and (a2) were disclosed in detail in the description of the first subject matter of the present disclosure.

Particularly preferred is the

(2) Providing an agent (II), wherein the agent (II) is water-comprising and comprises at least one fatty component and/or at least one surfactant.

Further particularly preferred also is the

(2) Providing an agent (II), wherein the agent (II) is water-comprising and comprises at least one amino-functionalized silicone polymer (a3)).

The agent (I) here preferably represents a predispersion of the pigments (a2) in the C₂-C₃₀ alkyl methicone (a1), which can be in the form of a concentrate, for example.

The agent (II) is a base formulation, preferably in the form of a base cream. If agents (I) and (II) are mixed, the predispersion of the pigments (a2) in the C₂-C₃₀ alkyl methicone (a1) ensures a particularly fine distribution of the pigments, which is retained in the ready-to-use agent even after mixing of the two agents (I) and (II).

Particularly if, in addition to C₂-C₃₀ alkyl methicone(s) (a1) and pigment(s) (a2), at least one amino-functionalized silicone polymer (a3) is also to be used in the dyeing process, it makes sense to separate component (a3) from (a1)/(a2) during storage. In this case, (a3) is mixed with (a1)/(a2) and with the base formulation just before use.

Depending on the selected pH, the aminosilicone (a3) has in some cases shown reduced storage stability in aqueous environments. In these cases, it may be advantageous to also use the

amino functionalized silicone polymer (a3) in a separate agent and to mix both the predispersion (a1)/(a2) and the aminosilicone (a3) with a base formulation only shortly before use. In this case, at least three different agents are mixed to produce the ready-to-use colorant.

Thus, another subject matter is a process for dyeing keratinous fibers, in particular human hair, comprising the following steps:

(1) Providing an agent (I), wherein the agent (I) comprises:

(a1) at least one C₂-C₃₀ alkyl methicone and

(a2) at least pigment,

(2) Providing an agent (II), wherein the agent (II) is an aqueous cosmetic carrier formulation, (3) Providing an agent (III), wherein the agent (III) comprises:

(a3) at least one amino-functionalized silicone polymer (a3),

(4) Prepare an application mixture by mixing agents (I) and (II) and (III), (5) Apply the application mixture prepared in step (4) to the keratinous material, (6) exposure of the application mixture applied in step (5) to the keratinous material; and (7) Rinse the application mixture with water, wherein the ingredients (a1), (a2) and (a3) were disclosed in detail in the description of the first subject matter of the present disclosure.

In the context of this embodiment, the agent (I) preferably represents a predispersion of the pigments (a2) in the C₂-C₃₀ alkyl methicone (a1), which may be in the form of a concentrate, for example. The agent (III) is preferably also a concentrate comprising the amino-functionalized silicone polymer(s) (a3).

Before application, the two agents or concentrates (I) and (III) are then mixed with the carrier formulation (II). The order of mixing is arbitrary. Thus, agents (I) and (II) can first be mixed with one another, whereupon this mixture is then mixed with agent (III). Likewise, it is conceivable to first mix agents (II) and (III) and then mix this mixture with agent (I). Also, all three agents (I), (II) and (III) can be added together and then mixed by shaking or stirring first.

The carrier formulation comprises water and preferably has a high-water content. The optionally applicable further ingredients of the first present disclosure may also be included in this carrier formulation.

Particularly preferred here is also the

(2) Providing an agent (II), wherein the agent (II) is water-comprising and comprises at least one fatty component and/or at least one surfactant.

Predispersion of the Pigments (a2) in the C2-C30 Alkymethicone (a1)

As described previously, it is particularly preferred to first prepare a predispersion from pigment(s) (a2) and C₂-C₃₀ alkymethicone (a1).

For this purpose, pigment and C₂-C₃₀ alkymethicone can be mixed using a stirrer. Particularly good mixing can be achieved here if an ultrathorax mixer is used as the mixer.

For example, 1 part by weight of pigment(s) (a2) mixed with 2 up to 6 parts by weight of C₂-C₃₀ alkymethicone (a1) can be selected as the mixing ratio of pigment (a2) to C₂-C₃₀ alkymethicone (a1).

Multi-Component Packaging Unit

To increase user convenience, the agents described above can be provided to the user in the form of a multi-component packaging unit.

Another object is therefore a multi-component packaging unit (kit-of-parts) for dyeing keratinous fibers, in particular human hair, comprising separately prepared

-   -   a first container comprising an agent (I), the agent (I)         comprising:         -   (a1) at least one C₂-C₃₀ alkyl methicone and         -   (a2) at least pigment,     -   a second container comprising an agent (II), wherein the         agent (II) is a water-comprising cosmetic carrier formulation,         wherein the ingredients (a1) and (a2) are defined in claims 1 to         12.

Preferably, a multi-component packaging unit (kit-of-parts) comprising.

-   -   a second container with an agent (II), wherein the agent (II) is         water-comprising and comprises at least one fatty constituent         and/or at least one surfactant.

Furthermore, very particularly preferred is a multi-component packaging unit comprising separately assembled

-   -   a third container comprising an agent (III), said agent (III)         comprising: (a3) at least one amino-functionalized silicone         polymer (a3),         wherein the ingredient (a3) was disclosed in detail in the         description of the first subject matter of the present         disclosure.

Regarding the further preferred embodiments of the processes as contemplated herein and of the multi-component packaging unit as contemplated herein, mutatis mutandis what has been said about the agent as contemplated herein applies.

EXAMPLES 1. Formulations

The following formulations were prepared (all data in grams unless otherwise indicated):

Pre-dispersion (agent (I)) Total quantity: 7 g Unipure Red LC 3071 (CI 15850, Sensien) 1.0 g Caprylylmethicone (Dowsil FZ-3196 Fluid, 6.0 g Dow Corning)

Carrier formulation (agent (II)) Total quantity: 92 g Cetyl alcohol 3.6 g Stearyl alcohol 2.0 g Paraffinum Liquidum 2.1 g Ceteareth-30 1.2 g Ceteareth-100 0.6 g Glyceryl stearate 0.6 g Potassium dihydrogen phosphate 0.35 g Disodium hydrogen phosphate 0.72 g Phenoxyethanol 0.9 g Water ad 92 g

Concentrate with aminosilicone (a3) (agent (III)) Total quantity: 1 g Aminosilicone (Dow Corning 2-8566 (Siloxanes and 1.0 g Silicones, 3-[(2-Aminoethyl)amino]-2-methylpropyl Me, Di-Me-Siloxane).

Agents (I), (II) and (III) were mixed before use. The ready-to-use agent obtained in this way was applied to a strand of hair (Kerling company, “Euronatur-haar weiß” (ENH) type) (liquor ratio: 1 g agent per g strand of hair) and left to act for three minutes. Subsequently, the hair strand was thoroughly (1 minute) washed with water and dried. Then the strand of hair was visually evaluated. A uniform red coloration with high color intensity was obtained

While at least one exemplary embodiment has been presented in the foregoing detailed description, it should be appreciated that a vast number of variations exist. It should also be appreciated that the exemplary embodiment or exemplary embodiments are only examples, and are not intended to limit the scope, applicability, or configuration of the various embodiments in any way. Rather, the foregoing detailed description will provide those skilled in the art with a convenient road map for implementing an exemplary embodiment as contemplated herein. It being understood that various changes may be made in the function and arrangement of elements described in an exemplary embodiment without departing from the scope of the various embodiments as set forth in the appended claims. 

1. An agent for dyeing keratinous fibers, the agent comprising: (a1) at least one C₂-C₃₀ alkyl methicone; and (a2) at least one pigment.
 2. The agent according to claim 1, wherein the at least one C₂-C₃₀ alkyl methicone (a1) is of the formula (Si alkyl),

where R₁, R₂, R₃ independently of one another represent a C₁-C₃₀-alkyl group, a C₁-C₆-alkoxy group, a hydroxyl group, or a hydrogen atom, x represents an integer from 0 to 1000, y represents an integer from 0 to 1000, and z represents an integer from 0 to 1000, wherein at least one of the radicals from the group consisting of R₁, R₂ and R₃ is a C₂-C₃₀-alkyl group, and when R₂ is a C₂-C₃₀ alkyl group, y is at least
 1. 3. The agent according to claim 1, wherein the at least one C₂-C₃₀ alkyl methicone (a1) is of the formula (Si alkyl)

where R₁ represents a C₁-C₃₀ alkyl group, R₂ represents a C₂-C₃₀ alkyl group, R₃ represents a C₁-C₃₀ alkyl group, x represents an integer from 0 to 10, y represents an integer from 1 to 10, and z represents an integer from 0 to
 10. 4. The agent according to claim 1, wherein the at least one C₂-C₃₀ alkyl methicone (a1) is selected from the group consisting of caprylylmethicone, cetearylmethicone, ethylmethicone, hexylmethicone, laurylmethicone, myristylmethicone, and stearylmethicone.
 5. The agent according to claim 1, wherein the agent comprises, based on the total weight of the agent, the at least one C₂-C₃₀ alkyl methicone (a1) in a total amount of from 0.1 to 10.0 wt. %.
 6. The agent according to claim 1, wherein the at least one pigment comprises at least one inorganic pigment selected from the group consisting of colored metal oxides, metal hydroxides, metal oxide hydrates, silicates, metal sulfides, complex metal cyanides, metal sulfates, bronze pigments and/or mica- or mica-based colored pigments coated with at least one metal oxide and/or a metal oxychloride.
 7. The agent according to claim 1, wherein the at least one pigment comprises at least one organic pigment (a2) selected from the group consisting of carmine, quinacridone, phthalocyanine, Sorgho, blue pigments with the color index numbers CI 42090, CI 69800, CI 69825, CI 73000, CI 74100, or CI 74160, yellow pigments with the color index numbers CI 11680, CI 11710, CI 15985, CI 19140, CI 20040, CI 21100, CI 21108, CI 47000, or CI 47005, green pigments with Color Index numbers CI 61565, CI 61570, or CI 74260, orange pigments with Color Index numbers CI 11725, CI 15510, CI 45370, or CI 71105, and red pigments with Color Index numbers CI 12085, CI 12120, CI 12370, CI 12420, CI 12490, CI 14700, CI 15525, CI 15580, CI 15620, CI 15630, CI 15800, CI 15850, CI 15865, CI 15880, CI 17200, CI 26100, CI 45380, CI 45410, CI 58000, CI 73360, CI 73915 or CI
 75470. 8. The agent according to claim 1, wherein the agent comprises, based on the total weight of the composition, the at least one pigment in a total amount of 0.01 to 10.0 wt. %.
 9. The agent according to claim 1, wherein the agent further comprises at least one amino-functionalized silicone polymer.
 10. The agent according to claim 1, wherein the agent further comprises at least one amino-functionalized silicone polymer (a3) comprising at least one structural unit of the formula (Si amino),

where ALK1 and ALK2 independently represent a linear or branched C₁-C₂₀ divalent alkylene group.
 11. The agent according to claim 1, wherein the agent further comprises at least one amino-functionalized silicone polymer (a3) comprising structural units of the formula (Si-I) and of the formula (Si-II)


12. The agent according to claim 1, wherein the agent further comprises, based on the total weight of the agent at least one amino-functionalized silicone polymer (a3) in a total amount of from 0.1 to 8.0 wt. %.
 13. A process for dyeing keratinous fibers comprising applying the agent of claim 1 to the keratinous fibers and, after an exposure time of 30 seconds to 45 minutes, rinsing the agent from the keratinous fibers.
 14. A process for dyeing keratinous fibers, comprising: providing a first agent (I), wherein the first agent (I) comprises: (a1) at least one C₂-C₃₀ alkyl methicone, and (a2) at least pigment, providing a second agent (II), wherein the second agent (II) is an aqueous cosmetic carrier formulation, preparing an application mixture by mixing the first and second agents (I) and (II), applying the application mixture to the keratinous material; and rinsing the application mixture from the keratinous material with water.
 15. The process of claim 14, further, comprising: providing a third agent (III), wherein the third agent (III) comprises: (a3) at least one amino-functionalized silicone polymer, and wherein preparing the application mixture comprises mixing the first, second, and third agents (I) and (II) and (III).
 16. A multicomponent packaging unit (kit-of-parts) for dyeing keratinous fibers, comprising: a first container comprising a first agent (I), the first agent (I) comprising: (a1) at least one C₂-C₃₀ alkyl methicone, and (a2) at least pigment, and a second container comprising a second agent (II), wherein the second agent (II) is a water-containing cosmetic carrier formulation.
 17. The kit-of-parts according to claim 16, further comprising a third container containing a third agent (III), wherein the third agent (III) comprises: (a3) at least one amino-functionalized silicone polymer.
 18. The agent according to claim 1, wherein the at least one C₂-C₃₀ alkyl methicone (a1) is of the formula (Si alkyl),

where R₁ represents a methyl group, R₂ represents a C₆-C₁₀ alkyl group, R₃ represents a C₁-C₃₀ alkyl group, x represents the number 0, y represents the number 1, and z represents the number
 0. 19. The agent according to claim 1, wherein the at least one C₂-C₃₀ alkyl methicone (a1) is caprylylmethicone, and wherein the caprylylmethicone is present in a total amount of from from 0.5 to 2.0 wt. %, based on the total weight of the agent.
 20. The agent according to claim 19, wherein the agent comprises, based on the total weight of the composition, the at least one pigment in a total amount of 0.25 to 1.5 wt. %. 